From 722d53055cc78a7a7d9901d2b1fe23a2a33fb623 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 8 Jul 2012 23:11:01 +0300
Subject: [PATCH] Add SubTool class

---
 source/tool.cpp |  6 ++++++
 source/tool.h   | 13 +++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/source/tool.cpp b/source/tool.cpp
index 5556cb3..1ab3660 100644
--- a/source/tool.cpp
+++ b/source/tool.cpp
@@ -24,3 +24,9 @@ Target *Tool::create_target(Target &source, const string &arg) const
 	sources.push_back(&source);
 	return create_target(sources, arg);
 }
+
+
+SubTool::SubTool(Tool &p):
+	Tool(p),
+	parent(p)
+{ }
diff --git a/source/tool.h b/source/tool.h
index d1d7103..36d1be1 100644
--- a/source/tool.h
+++ b/source/tool.h
@@ -44,4 +44,17 @@ public:
 	virtual Task *run(const Target &) const = 0;
 };
 
+/**
+Intermediate base class for tool facets.  For example, a linker may need to
+use different commands depending on whether C++ source files are present or
+not, but their presence can't be directly determined from the object files.
+*/
+class SubTool: public Tool
+{
+protected:
+	Tool &parent;
+
+	SubTool(Tool &);
+};
+
 #endif
-- 
2.45.2