(scm_car, scm_cdr, scm_i_chase_pairs, SCM_I_A_PAT, SCM_I_D_PAT, etc,

scm_caar, scm_cadr, etc): New.

1 files changed, 67 insertions, 0 deletions

diff --git a/libguile/pairs.h b/libguile/pairs.h
index c03495b3e..854444c90 100644
--- a/libguile/pairs.h
+++ b/libguile/pairs.h
@@ -81,8 +81,75 @@ SCM_API void scm_error_pair_access (SCM);
 SCM_API SCM scm_cons (SCM x, SCM y);
 SCM_API SCM scm_cons2 (SCM w, SCM x, SCM y);
 SCM_API SCM scm_pair_p (SCM x);
+SCM_API SCM scm_car (SCM x);
+SCM_API SCM scm_cdr (SCM x);
 SCM_API SCM scm_set_car_x (SCM pair, SCM value);
 SCM_API SCM scm_set_cdr_x (SCM pair, SCM value);
+
+SCM_API int scm_is_pair (SCM val);
+
+#define SCM_I_D_PAT    0x02 /* 00000010 */
+#define SCM_I_A_PAT    0x03 /* 00000011 */
+#define SCM_I_DD_PAT   0x0a /* 00001010 */
+#define SCM_I_DA_PAT   0x0b /* 00001011 */
+#define SCM_I_AD_PAT   0x0e /* 00001110 */
+#define SCM_I_AA_PAT   0x0f /* 00001111 */
+#define SCM_I_DDD_PAT  0x2a /* 00101010 */
+#define SCM_I_DDA_PAT  0x2b /* 00101011 */
+#define SCM_I_DAD_PAT  0x2e /* 00101110 */
+#define SCM_I_DAA_PAT  0x2f /* 00101111 */
+#define SCM_I_ADD_PAT  0x3a /* 00111010 */
+#define SCM_I_ADA_PAT  0x3b /* 00111011 */
+#define SCM_I_AAD_PAT  0x3e /* 00111110 */
+#define SCM_I_AAA_PAT  0x3f /* 00111111 */
+#define SCM_I_DDDD_PAT 0xaa /* 10101010 */
+#define SCM_I_DDDA_PAT 0xab /* 10101011 */
+#define SCM_I_DDAD_PAT 0xae /* 10101110 */
+#define SCM_I_DDAA_PAT 0xaf /* 10101111 */
+#define SCM_I_DADD_PAT 0xba /* 10111010 */
+#define SCM_I_DADA_PAT 0xbb /* 10111011 */
+#define SCM_I_DAAD_PAT 0xbe /* 10111110 */
+#define SCM_I_DAAA_PAT 0xbf /* 10111111 */
+#define SCM_I_ADDD_PAT 0xea /* 11101010 */
+#define SCM_I_ADDA_PAT 0xeb /* 11101011 */
+#define SCM_I_ADAD_PAT 0xee /* 11101110 */
+#define SCM_I_ADAA_PAT 0xef /* 11101111 */
+#define SCM_I_AADD_PAT 0xfa /* 11111010 */
+#define SCM_I_AADA_PAT 0xfb /* 11111011 */
+#define SCM_I_AAAD_PAT 0xfe /* 11111110 */
+#define SCM_I_AAAA_PAT 0xff /* 11111111 */
+
+SCM_API SCM scm_i_chase_pairs (SCM x, scm_t_uint32 pattern);
+
+#define scm_cddr(x)   scm_i_chase_pairs ((x), SCM_I_DD_PAT)
+#define scm_cdar(x)   scm_i_chase_pairs ((x), SCM_I_DA_PAT)
+#define scm_cadr(x)   scm_i_chase_pairs ((x), SCM_I_AD_PAT)
+#define scm_caar(x)   scm_i_chase_pairs ((x), SCM_I_AA_PAT)
+#define scm_cdddr(x)  scm_i_chase_pairs ((x), SCM_I_DDD_PAT)
+#define scm_cddar(x)  scm_i_chase_pairs ((x), SCM_I_DDA_PAT)
+#define scm_cdadr(x)  scm_i_chase_pairs ((x), SCM_I_DAD_PAT)
+#define scm_cdaar(x)  scm_i_chase_pairs ((x), SCM_I_DAA_PAT)
+#define scm_caddr(x)  scm_i_chase_pairs ((x), SCM_I_ADD_PAT)
+#define scm_cadar(x)  scm_i_chase_pairs ((x), SCM_I_ADA_PAT)
+#define scm_caadr(x)  scm_i_chase_pairs ((x), SCM_I_AAD_PAT)
+#define scm_caaar(x)  scm_i_chase_pairs ((x), SCM_I_AAA_PAT)
+#define scm_cddddr(x) scm_i_chase_pairs ((x), SCM_I_DDDD_PAT)
+#define scm_cdddar(x) scm_i_chase_pairs ((x), SCM_I_DDDA_PAT)
+#define scm_cddadr(x) scm_i_chase_pairs ((x), SCM_I_DDAD_PAT)
+#define scm_cddaar(x) scm_i_chase_pairs ((x), SCM_I_DDAA_PAT)
+#define scm_cdaddr(x) scm_i_chase_pairs ((x), SCM_I_DADD_PAT)
+#define scm_cdadar(x) scm_i_chase_pairs ((x), SCM_I_DADA_PAT)
+#define scm_cdaadr(x) scm_i_chase_pairs ((x), SCM_I_DAAD_PAT)
+#define scm_cdaaar(x) scm_i_chase_pairs ((x), SCM_I_DAAA_PAT)
+#define scm_cadddr(x) scm_i_chase_pairs ((x), SCM_I_ADDD_PAT)
+#define scm_caddar(x) scm_i_chase_pairs ((x), SCM_I_ADDA_PAT)
+#define scm_cadadr(x) scm_i_chase_pairs ((x), SCM_I_ADAD_PAT)
+#define scm_cadaar(x) scm_i_chase_pairs ((x), SCM_I_ADAA_PAT)
+#define scm_caaddr(x) scm_i_chase_pairs ((x), SCM_I_AADD_PAT)
+#define scm_caadar(x) scm_i_chase_pairs ((x), SCM_I_AADA_PAT)
+#define scm_caaadr(x) scm_i_chase_pairs ((x), SCM_I_AAAD_PAT)
+#define scm_caaaar(x) scm_i_chase_pairs ((x), SCM_I_AAAA_PAT)
+
 SCM_API void scm_init_pairs (void);
 
 #endif  /* SCM_PAIRS_H */