Split out ServiceList and ServiceParser from service.cpp/.h

These always should have been in their own files.

Test: build
Change-Id: I201109b5ee63016e78901bbfd404846d45e1d4e6
diff --git a/init/service_parser.h b/init/service_parser.h
new file mode 100644
index 0000000..8efe2ef
--- /dev/null
+++ b/init/service_parser.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <vector>
+
+#include "parser.h"
+#include "service.h"
+#include "service_list.h"
+#include "subcontext.h"
+
+namespace android {
+namespace init {
+
+class ServiceParser : public SectionParser {
+  public:
+    ServiceParser(ServiceList* service_list, std::vector<Subcontext>* subcontexts)
+        : service_list_(service_list), subcontexts_(subcontexts), service_(nullptr) {}
+    Result<void> ParseSection(std::vector<std::string>&& args, const std::string& filename,
+                              int line) override;
+    Result<void> ParseLineSection(std::vector<std::string>&& args, int line) override;
+    Result<void> EndSection() override;
+    void EndFile() override { filename_ = ""; }
+
+  private:
+    bool IsValidName(const std::string& name) const;
+
+    ServiceList* service_list_;
+    std::vector<Subcontext>* subcontexts_;
+    std::unique_ptr<Service> service_;
+    std::string filename_;
+};
+
+}  // namespace init
+}  // namespace android