forked from lix-project/lix
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
|
#ifndef __ATERM_H
|
||
|
#define __ATERM_H
|
||
|
|
||
|
extern "C" {
|
||
|
#include <aterm2.h>
|
||
|
}
|
||
|
|
||
|
#include "util.hh"
|
||
|
|
||
|
|
||
|
/* Print an ATerm. */
|
||
|
string atPrint(ATerm t);
|
||
|
|
||
|
/* Write an ATerm to an output stream. */
|
||
|
ostream & operator << (ostream & stream, ATerm e);
|
||
|
|
||
|
/* Type-safe matching. */
|
||
|
|
||
|
struct ATMatcher
|
||
|
{
|
||
|
ATerm t;
|
||
|
int pos;
|
||
|
const static int failPos = -2;
|
||
|
const static int funPos = -1;
|
||
|
|
||
|
ATMatcher() : t(0), pos(failPos)
|
||
|
{
|
||
|
}
|
||
|
|
||
|
operator bool() const
|
||
|
{
|
||
|
return pos != failPos;
|
||
|
}
|
||
|
};
|
||
|
|
||
|
/* Initiate matching of a term. */
|
||
|
ATMatcher & atMatch(ATMatcher & pos, ATerm t);
|
||
|
|
||
|
/* Get the next argument of an application. */
|
||
|
ATMatcher & operator >> (ATMatcher & pos, ATerm & out);
|
||
|
|
||
|
/* Get the name of the function symbol of an applicatin, or the next
|
||
|
argument of an application as a string. */
|
||
|
ATMatcher & operator >> (ATMatcher & pos, string & out);
|
||
|
|
||
|
/* Like the previous, but check that the string is equal to the given
|
||
|
string. */
|
||
|
ATMatcher & operator >> (ATMatcher & pos, const string & s);
|
||
|
|
||
|
/* Get the next argument of an application, and verify that it is a
|
||
|
list. */
|
||
|
ATMatcher & operator >> (ATMatcher & pos, ATermList & out);
|
||
|
|
||
|
|
||
|
#endif /* !__ATERM_H */
|