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-rw-r--r--libguile/__scm.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/libguile/__scm.h b/libguile/__scm.h
index 0f6d24d6c..888ba18e2 100644
--- a/libguile/__scm.h
+++ b/libguile/__scm.h
@@ -415,6 +415,28 @@ extern unsigned int scm_async_clock;
goto _label
#endif
+/*
+ * SCM_WTA_DISPATCH
+ */
+
+extern SCM scm_call_generic_1 (SCM gf, SCM a1);
+
+#define SCM_WTA_DISPATCH_1(gf, a1, pos, subr) \
+ return ((gf) \
+ ? scm_call_generic_1 ((gf), (a1)) \
+ : scm_wta ((a1), (char *) (pos), (subr)))
+#define SCM_GASSERT1(cond, gf, a1, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_1((gf), (a1), (pos), (subr))
+
+extern SCM scm_call_generic_2 (SCM gf, SCM a1, SCM a2);
+
+#define SCM_WTA_DISPATCH_2(gf, a1, a2, pos, subr) \
+ return ((gf) \
+ ? scm_call_generic_2 ((gf), (a1), (a2)) \
+ : scm_wta ((pos) == SCM_ARG1 ? (a1) : (a2), (char *) (pos), (subr)))
+#define SCM_GASSERT2(cond, gf, a1, a2, pos, subr) \
+ if (!(cond)) SCM_WTA_DISPATCH_2((gf), (a1), (a2), (pos), (subr))
+
#define SCM_ARGn 0
#define SCM_ARG1 1
#define SCM_ARG2 2