lix/src/libutil/aterm.cc

#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);
}