chore: Add helpers to simplify access to the LSP types

Author: robertoraggi

packages/cxx-gen-lsp/src/MetaModel.ts

@@ -143,6 +143,26 @@ export function isRequest(request: Request | Notification): request is Request {
   return "result" in request;
 }
 
+export function isStringLike(type: Type, typeAliasByName: Map<string, TypeAlias>): boolean {
+  switch (type.kind) {
+    case "base":
+      return type.name === "string";
+
+    case "reference": {
+      if (typeAliasByName.has(type.name)) {
+        return isStringLike(typeAliasByName.get(type.name)!.type, typeAliasByName);
+      }
+      return false;
+    }
+
+    case "stringLiteral":
+      return true;
+
+    default:
+      return false;
+  } // switch
+}
+
 export function getEnumBaseType(enumeration: Enumeration) {
   switch (enumeration.type.name) {
     case "integer":

packages/cxx-gen-lsp/src/gen_requests_cc.ts

@@ -165,26 +165,6 @@ class RequestGenerator {
     return propertyType;
   }
 
-  isStringLike(type: Type): boolean {
-    switch (type.kind) {
-      case "base":
-        return type.name === "string";
-
-      case "reference": {
-        if (this.typeAliasByName.has(type.name)) {
-          return this.isStringLike(this.typeAliasByName.get(type.name)!.type);
-        }
-        return false;
-      }
-
-      case "stringLiteral":
-        return true;
-
-      default:
-        return false;
-    } // switch
-  }
-
   begin() {
     this.emit(copyrightHeader);
     this.emit();

packages/cxx-gen-lsp/src/gen_types_cc.ts

@@ -76,26 +76,6 @@ class TypeGenerator {
     return propertyType;
   }
 
-  isStringLike(type: Type): boolean {
-    switch (type.kind) {
-      case "base":
-        return type.name === "string";
-
-      case "reference": {
-        if (this.typeAliasByName.has(type.name)) {
-          return this.isStringLike(this.typeAliasByName.get(type.name)!.type);
-        }
-        return false;
-      }
-
-      case "stringLiteral":
-        return true;
-
-      default:
-        return false;
-    } // switch
-  }
-
   begin() {
     this.emit(copyrightHeader);
     this.emit();
@@ -212,7 +192,8 @@ class TypeGenerator {
     } // switch
 
     this.emit();
-    this.emit(`lsp_runtime_error("${structure.name}::${property.name}: not implement yet");`);
+
+    this.emit(`lsp_runtime_error("${structure.name}::${property.name}: not implemented yet");`);
   }
 
   generatePropertyGetterBase({ property }: { structure: Structure; property: Property }): boolean {
@@ -362,6 +343,10 @@ class TypeGenerator {
         if (!this.generatePropertySetterReference({ structure, property, value })) break;
         return;
 
+      case "array":
+        this.emit(`(*repr_)["${property.name}"] = std::move(${value});`);
+        return;
+
       case "or":
         if (!this.generatePropertySetterOr({ structure, property, value })) break;
         return;
@@ -370,7 +355,7 @@ class TypeGenerator {
         break;
     } // switch
 
-    this.emit(`lsp_runtime_error("${typeName}::${property.name}: not implement yet");`);
+    this.emit(`lsp_runtime_error("${typeName}::${property.name}: not implemented yet");`);
   }
 
   generatePropertySetterReference({

packages/cxx-gen-lsp/src/gen_types_h.ts

@@ -19,7 +19,7 @@
 // SOFTWARE.
 
 import * as path from "node:path";
-import { getStructureProperties, MetaModel, Property, toCppType } from "./MetaModel.js";
+import { getStructureProperties, isStringLike, MetaModel, Property, toCppType, Type } from "./MetaModel.js";
 import { writeFileSync } from "node:fs";
 import { copyrightHeader } from "./copyrightHeader.js";
 
@@ -47,6 +47,17 @@ export function gen_types_h({ model, outputDirectory }: { model: MetaModel; outp
   emit(`namespace cxx::lsp {`);
   emit();
 
+  const typeAliasByName = new Map(model.typeAliases.map((t) => [t.name, t]));
+
+  const isOrType = (type: Type) => {
+    if (type.kind === "or") {
+      return true;
+    } else if (type.kind === "reference" && typeAliasByName.has(type.name)) {
+      return isOrType(typeAliasByName.get(type.name)!.type);
+    }
+    return false;
+  };
+
   model.structures.forEach((structure) => {
     const typeName = structure.name;
     emit();
@@ -63,6 +74,14 @@ export function gen_types_h({ model, outputDirectory }: { model: MetaModel; outp
       const returnType = getReturnType(property);
       emit();
       emit(`    [[nodiscard ]]auto ${propertyName}() const -> ${returnType};`);
+      if (property.optional || property.type.kind === "or") {
+        emit();
+        emit(`template <typename T>`);
+        emit(`[[nodiscard]] auto ${propertyName}() -> T {`);
+        emit(`  auto& value = (*repr_)["${propertyName}"];`);
+        emit(`  return T(value);`);
+        emit(`}`);
+      }
     });
 
     emit();
@@ -71,6 +90,15 @@ export function gen_types_h({ model, outputDirectory }: { model: MetaModel; outp
       const argumentType = getReturnType(property);
       emit();
       emit(`    auto ${propertyName}(${argumentType} ${propertyName}) -> ${typeName}&;`);
+
+      if (property.type.kind === "array" && isStringLike(property.type.element, typeAliasByName)) {
+        emit();
+        emit(`    auto ${propertyName}(std::vector<std::string> ${propertyName}) -> ${typeName}& {`);
+        emit(`      auto& value = (*repr_)["${propertyName}"];`);
+        emit(`      value = std::move(${propertyName});`);
+        emit(`      return *this;`);
+        emit(`    }`);
+      }
     });
 
     emit(`};`);