Reorganize modules into layered directories

host/adapter/injection.js

@@ -0,0 +1,103 @@
+import { buildCapabilityStatus, mergeVersionHints } from "./capabilities.js";
+import { createContextHostFacade } from "./context.js";
+import { debugDebug } from "../../runtime/debug-logging.js";
+
+function resolvePromptSetter(providedSetter = null, contextHost = null) {
+  if (typeof providedSetter === "function") {
+    return {
+      setter: providedSetter,
+      source: "provided",
+    };
+  }
+
+  const context = contextHost?.readContextSnapshot?.();
+  if (typeof context?.setExtensionPrompt === "function") {
+    return {
+      setter: context.setExtensionPrompt.bind(context),
+      source: "context",
+    };
+  }
+
+  return {
+    setter: null,
+    source: contextHost?.available ? "context-missing-setter" : "unavailable",
+  };
+}
+
+function detectInjectionMode(setterRecord, contextHost) {
+  if (typeof setterRecord?.setter === "function") {
+    return setterRecord.source === "provided"
+      ? "provided-setter"
+      : "context-extension-prompt";
+  }
+
+  if (contextHost?.available) {
+    return "context-without-extension-prompt";
+  }
+
+  return "unavailable";
+}
+
+export function createInjectionHostFacade(options = {}) {
+  const contextHost = options.contextHost || createContextHostFacade(options);
+  const setterRecord = resolvePromptSetter(
+    options.setExtensionPrompt,
+    contextHost,
+  );
+  const available = typeof setterRecord.setter === "function";
+  const mode = detectInjectionMode(setterRecord, contextHost);
+
+  return Object.freeze({
+    available,
+    mode,
+    fallbackReason: available
+      ? ""
+      : contextHost?.available
+        ? "当前上下文未暴露 setExtensionPrompt 接口"
+        : "未检测到可用注入宿主接口",
+    versionHints: mergeVersionHints(
+      {
+        setter: "setExtensionPrompt",
+        source: setterRecord.source,
+        contextMode: contextHost?.mode || "unknown",
+      },
+      options.versionHints,
+    ),
+    setExtensionPrompt: (...args) => {
+      const liveSetterRecord = resolvePromptSetter(
+        options.setExtensionPrompt,
+        contextHost,
+      );
+      if (typeof liveSetterRecord.setter !== "function") {
+        return false;
+      }
+
+      try {
+        liveSetterRecord.setter(...args);
+        return true;
+      } catch (error) {
+        debugDebug(
+          "[ST-BME] host-adapter/injection setExtensionPrompt 调用失败",
+          error,
+        );
+        return false;
+      }
+    },
+    readInjectionSupport: () => {
+      const liveSetterRecord = resolvePromptSetter(
+        options.setExtensionPrompt,
+        contextHost,
+      );
+      return Object.freeze({
+        available: typeof liveSetterRecord.setter === "function",
+        mode: detectInjectionMode(liveSetterRecord, contextHost),
+        source: liveSetterRecord.source,
+      });
+    },
+  });
+}
+
+export function inspectInjectionHostCapability(options = {}) {
+  const facade = createInjectionHostFacade(options);
+  return buildCapabilityStatus(facade);
+}