asymptote 1.72 sources (not integrated into build yet)

git-svn-id: svn://tug.org/texlive/trunk@13110 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 23 insertions, 0 deletions

diff --git a/Build/source/utils/asymptote/lexical.h b/Build/source/utils/asymptote/lexical.h
new file mode 100644
index 00000000000..fc3879961d6
--- /dev/null
+++ b/Build/source/utils/asymptote/lexical.h
@@ -0,0 +1,23 @@
+#ifndef __lexical_h__
+#define __lexical_h__ 1
+
+#include <sstream>
+
+#include "common.h"
+
+namespace lexical {
+
+class bad_cast {};
+
+template <typename T> 
+T cast(const string& s, bool tolerant=false) 
+{
+  istringstream is(s);
+  T value;
+  if(is && is >> value && ((is >> std::ws).eof() || tolerant)) return value;
+  throw bad_cast();
+} 
+
+}
+
+#endif