Implement checked workspace integration contracts (WI-01)

src/capability-language/parser.ts

@@ -1333,9 +1333,25 @@ const lowerPackage = (
     }),
   );
   const genericExports: GenericPackageExport[] = [];
+  const components: NonNullable<PackageRevision["components"]> = [];
   const queries: QueryDeclaration[] = [];
   const queryTemplates: QueryTemplate[] = [];
   const exports = context.packageExport().flatMap((exportContext): PackageExport[] => {
+    const component = exportContext.componentDecl();
+    if (component) {
+      const runtime = identifier(component.identifier(1));
+      if (runtime !== "react")
+        loweringIssue(state, component, "unsupported-component-runtime", `Unsupported component runtime ${runtime}`);
+      components.push({
+        id: stringValue(component.stringLiteral()),
+        displayName: identifier(component.identifier(0)),
+        subject: new TypeSubstitution(state.types.environment()).application(
+          state.types.interface(component.interfaceType()),
+        ),
+        runtime: "react",
+      });
+      return [];
+    }
     if (exportContext.packageQuerySpecialization()) return [];
     const query = exportContext.packageQuery();
     if (query) {
@@ -1595,6 +1611,7 @@ const lowerPackage = (
     displayName: alias,
     source,
     exports,
+    ...(components.length ? { components } : {}),
     ...(queries.length ? { queries } : {}),
     ...(queryTemplates.length ? { queryTemplates } : {}),
     ...(queries.some((query) => query.argumentRequirements?.length)
@@ -2397,6 +2414,30 @@ const lowerWorkspace = (
       : [];
   });
 
+  const presentations: NonNullable<WorkspaceRevision["presentations"]> = items.flatMap((item) => {
+    const presentation = item.presentationDecl();
+    if (!presentation) return [];
+    const packageName = identifier(presentation.identifier(1));
+    const componentName = identifier(presentation.identifier(2));
+    const pkg = requireSymbol(state, state.packages, packageName, presentation, "package");
+    const component = pkg?.definition?.components?.find((entry) => entry.displayName === componentName);
+    if (!component) {
+      loweringIssue(state, presentation, "unknown-component", `Unknown component ${packageName}.${componentName}`);
+      return [];
+    }
+    return [
+      {
+        id: stringValue(presentation.stringLiteral()),
+        displayName: identifier(presentation.identifier(0)),
+        subject: new TypeSubstitution(state.types.environment()).application(
+          state.types.interface(presentation.interfaceType()),
+        ),
+        packageRevisionId: pkg!.revisionId,
+        componentId: component.id,
+      },
+    ];
+  });
+
   return {
     imports,
     workspace: {
@@ -2417,6 +2458,7 @@ const lowerWorkspace = (
       ),
       conformances,
       constructors,
+      ...(presentations.length ? { presentations } : {}),
     },
   };
 };