nix-super/src/libutil/aterm.cc
2004-11-03 18:12:03 +00:00

41 lines
801 B
C++

#include "aterm.hh"
string atPrint(ATerm t)
{
if (!t) throw Error("attempt to print null aterm");
char * s = ATwriteToString(t);
if (!s) throw Error("cannot print term");
return s;
}
ostream & operator << (ostream & stream, ATerm e)
{
return stream << atPrint(e);
}
Error badTerm(const format & f, ATerm t)
{
char * s = ATwriteToString(t);
if (!s) throw Error("cannot print term");
if (strlen(s) > 1000) {
int len;
s = ATwriteToSharedString(t, &len);
if (!s) throw Error("cannot print term");
}
return Error(format("%1%, in `%2%'") % f.str() % (string) s);
}
ATerm toATerm(const char * s)
{
return (ATerm) ATmakeAppl0(ATmakeAFun((char *) s, 0, ATtrue));
}
ATerm toATerm(const string & s)
{
return toATerm(s.c_str());
}