fix(tools): issue when converting a valid model to Protobuf

packages/concerto-tools/lib/codegen/fromcto/protobuf/protobufvisitor.js

@@ -114,7 +114,7 @@ class ProtobufVisitor {
      * @public
      */
     getNamesOfSubclassesOfClassRecursively(classDeclaration) {
-        return typeof classDeclaration.getAssignableClassDeclarations === 'function'
+        return typeof classDeclaration?.getAssignableClassDeclarations === 'function'
             ? classDeclaration.getAssignableClassDeclarations()
                 ?.filter(
                     assignableClass => assignableClass.getName() !== classDeclaration.getName()

packages/concerto-tools/test/codegen/fromcto/protobuf/data/apapProtocol.cto

@@ -0,0 +1,200 @@
+@description("Accord Project Agreement Protocol")
+namespace [email protected]
+
+import [email protected].{Property,ConceptDeclaration,Model} from https://models.accordproject.org/concerto/[email protected]
+import [email protected] from https://models.accordproject.org/markdown/[email protected]
+import [email protected].{Party} from https://models.accordproject.org/accordproject/[email protected]
+
+scalar JSON extends String
+scalar FullyQualifiedTypeName extends String
+
+@description("Bytes and mime type for a blob of data, such as images, files, etc.")
+concept Blob {
+    o String base64
+    o String mimeType   // e.g. "image/jpeg", "application/pdf", "audio/mpeg", "video/mp4", etc...
+}
+
+@description("The text for a template")
+concept Text {
+    o Document templateMark
+}
+
+@description("The concept declaration associated with a template")
+concept TemplateModel {
+    o FullyQualifiedTypeName typeName       // name of the type for this template
+    --> SharedModel sharedModel optional    // reference to a shared model
+    o Model model optional                  // an inline model
+}
+
+@description("A shared data model")
+@resource
+concept SharedModel identified by modelId {
+    o String modelId
+    o Model model
+}
+
+@description("The type (language) of code")
+enum CodeType {
+    o ES2015
+    o WASM_BYTES
+}
+
+@description("Code encoding scheme")
+enum CodeEncodingType {
+    o PLAIN_TEXT
+    o BASE64
+}
+
+@description("Executable code")
+concept Code {
+    o CodeType type
+    o CodeEncodingType encoding
+    o String value
+}
+
+@description("A function for a template")
+concept Function identified by name {
+    o String name
+    o FullyQualifiedTypeName requestType
+    o FullyQualifiedTypeName responseType optional
+    o FullyQualifiedTypeName[] emittedTypes optional
+    o Code code
+}
+
+@description("The functions for a template")
+concept Logic {
+    o FullyQualifiedTypeName stateType optional
+    o Function[] functions
+}
+
+@resource
+@description("An Accord Project template")
+concept Template identified by name {
+    o String name
+    o String author
+    o String displayName optional
+    o String version
+    o String description optional
+    o String license
+    o String[] keywords optional
+    o Blob logo optional
+    o TemplateModel templateModel
+    o Text text
+    o Logic logic optional
+}
+
+@description("A key/value pair")
+concept KeyValue {
+    o String key
+    o String value
+}
+
+@description("Generic metadata comprised of key/value pairs")
+concept Metadata {
+    o KeyValue[] values
+}
+
+@resource
+@description("An Accord Project Agreement, an instance of a template")
+concept Agreement identified by agreementId {
+    o String agreementId
+    o JSON data                             // Data for the agreement (an instance of the data for its template)
+    o JSON state optional                   // Runtime state of the agreement
+    --> Template template                   // Template for the the agreement
+    o AgreementParty[] agreementParties     // Parties to the agreement
+    o Signature[] signatures                // Signatures of the parties to the agreement
+    o AgreementStatusType agreementStatus   // Current status of agreement
+    o HistoryEntry[] historyEntries         // History of document state and details.
+    o Blob[] attachments                    // Pdfs, images, multimedia, etc. that form part of the agreement
+    o String[] references                   // uri/urls to external references relevant to agreement
+    o Metadata metadata                     // Additional data that may be relevant to the agreement
+}
+
+@description("A Party to an Agreement")
+participant AgreementParty extends Party {
+    o String name
+    o Boolean signatory                     // Sometimes a party named on an agreement are not required to sign (e.g. beneficiary)
+    o String role optional                  // Role of AgreementParty (e.g. "Owner", "Company Director", etc..)
+	o String email optional
+	o String phone optional
+    o String company optional
+    o String network optional
+    o Address address optional
+}
+
+@description("An Address of an Agreement Party")
+concept Address {
+  o String[] streetRoad
+  o String suburbTownCity optional
+  o String stateTerritoryRegion optional
+  o String postalCode optional
+  o String country optional
+}
+
+@description("A history entry for an Agreement")
+transaction HistoryEntry {
+    o AgreementStatusType agreementStatus   // Status at time of change
+    o JSON data                             // Data at time of change
+    o Metadata metadata                     // Additional data that may be relevant to the agreement at time of change
+}
+
+@description("A signature of an Agreement Party")
+concept Signature {
+    o AgreementParty signatory              // The Agreement Party signing the Agreement
+    o DateTime signedAt optional            // When the signing occurred
+    o Metadata metadata                     // Geolocation data, IP address, etc.
+    o Blob[] signatureImage                 // Selfie, proof-of-id, sign-on-glass image
+}
+
+@description("Abstract conversion options")
+abstract concept ConversionOptions {
+}
+
+@description("PDF conversion options")
+concept PdfConversionOptions extends ConversionOptions {
+    o JSON styles optional
+}
+
+@description("Server feature identifiers")
+enum FeatureType {
+    // note: crud operations on templates is required
+    o TEMPLATE_VERIFY_SIGNATURES   // verify a signed template
+    o TEMPLATE_LOGIC               // templates with logic
+    o TEMPLATE_STATEFUL            // stateful templates
+
+    o AGREEMENT_MANAGE             // crud operations on agreements
+    o AGREEMENT_TRIGGER            // trigger agreements
+    o AGREEMENT_STATE              // get the state of an agreement
+    o AGREEMENT_CONVERT_PDF        // convert agreement to PDF
+
+    // o AGREEMENT_SIGNING
+
+    o SHARED_MODEL_MANAGE          // manage shared models
+}
+
+@description("Server capabilities")
+concept Capabilities {
+    o FeatureType[] features
+}
+
+@description("Trigger a function with a JSON payload")
+concept TriggerRequest {
+    o String functionName
+    o JSON payload
+}
+
+@description("Response of triggering a function")
+concept TriggerResponse {
+    o JSON result optional
+    o Boolean isError
+    o String errorMessage optional
+    o String errorDetails optional
+}
+
+@description("Runtime status of an agreement")
+enum AgreementStatusType {
+    o DRAFT         // No signatories have signed yet
+    o SIGNNG        // Signed by some but not all signatories
+    o COMPLETED     // Signing by all signatories completed
+    o SUPERSEDED    // Superseded by subsequent agreement
+}