1 files changed, 44 insertions, 0 deletions
diff --git a/libbuild2/script/timeout.ixx b/libbuild2/script/timeout.ixx
new file mode 100644
index 0000000..755af17
--- /dev/null
+++ b/libbuild2/script/timeout.ixx
@@ -0,0 +1,44 @@
+// file      : libbuild2/script/timeout.ixx -*- C++ -*-
+// license   : MIT; see accompanying LICENSE file
+
+namespace build2
+{
+  inline optional<timestamp>
+  parse_deadline (const string& s, const char* what, const location& l)
+  {
+    if (optional<duration> t = parse_timeout (s, what, l))
+      return system_clock::now () + *t;
+    else
+      return nullopt;
+  }
+
+  template <typename T>
+  inline T
+  earlier (const T& x, const T& y)
+  {
+    return x < y ? x : y;
+  }
+
+  template <typename T>
+  inline T
+  earlier (const T& x, const optional<T>& y)
+  {
+    return y ? earlier (x, *y) : x;
+  }
+
+  template <typename T>
+  inline T
+  earlier (const optional<T>& x, const T& y)
+  {
+    return earlier (y, x);
+  }
+
+  template <typename T>
+  inline optional<T>
+  earlier (const optional<T>& x, const optional<T>& y)
+  {
+    return x ? earlier (*x, y) :
+           y ? earlier (*y, x) :
+               optional<T> ();
+  }
+}