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diff --git a/cmds/incident_helper/src/TextParserBase.h b/cmds/incident_helper/src/TextParserBase.h
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+++ b/cmds/incident_helper/src/TextParserBase.h
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+/*
+ * Copyright (C) 2017 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.
+ */
+
+#ifndef TEXT_PARSER_BASE_H
+#define TEXT_PARSER_BASE_H
+
+#include <utils/Errors.h>
+#include <utils/String8.h>
+
+using namespace android;
+
+/**
+ * Base class for text parser
+ */
+class TextParserBase {
+public:
+    String8 name;
+
+    TextParserBase(String8 name) : name(name) {};
+    virtual ~TextParserBase() {};
+
+    virtual status_t Parse(const int in, const int out) const = 0;
+};
+
+/**
+ * No op parser returns what it reads
+ */
+class NoopParser : public TextParserBase {
+public:
+    NoopParser() : TextParserBase(String8("NoopParser")) {};
+    ~NoopParser() {};
+
+    virtual status_t Parse(const int in, const int out) const;
+};
+
+/**
+ * This parser is used for testing only, results in timeout.
+ */
+class TimeoutParser : public TextParserBase {
+public:
+    TimeoutParser() : TextParserBase(String8("TimeoutParser")) {};
+    ~TimeoutParser() {};
+
+    virtual status_t Parse(const int /** in */, const int /** out */) const { while (true); };
+};
+
+/**
+ * This parser is used for testing only, results in reversed input text.
+ */
+class ReverseParser : public TextParserBase {
+public:
+    ReverseParser() : TextParserBase(String8("ReverseParser")) {};
+    ~ReverseParser() {};
+
+    virtual status_t Parse(const int in, const int out) const;
+};
+
+#endif // TEXT_PARSER_BASE_H