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diff --git a/tiger-compiler/src/task/multiple-string-task.hh b/tiger-compiler/src/task/multiple-string-task.hh
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+++ b/tiger-compiler/src/task/multiple-string-task.hh
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+/**
+ ** \file task/multiple-string-task.hh
+ ** \brief Declaration of task::MultipleStringTask.
+ **
+ */
+
+#pragma once
+
+#include <string>
+
+#include <task/argument-task.hh>
+
+namespace task
+{
+  /// A simple task that invokes callback function with string argument.
+  class MultipleStringTask : public ArgumentTask
+  {
+  public:
+    using callback_type = auto(const std::string&) -> void;
+
+    MultipleStringTask(callback_type& cb,
+                       const char* module_name,
+                       const char* desc,
+                       const char* name,
+                       std::string deps);
+
+  public:
+    void execute() const override;
+
+  public:
+    callback_type& execute_;
+  };
+
+} // namespace task