Support HPy slot HPy_sq_length

Author: fangerer

graalpython/com.oracle.graal.python.cext/include/common/autogen_hpyslot.h

@@ -66,6 +66,7 @@ typedef enum {
     HPy_nb_true_divide = 37,
     HPy_nb_xor = 38,
     HPy_sq_item = 44,
+    HPy_sq_length = 45,
     HPy_tp_init = 60,
     HPy_tp_new = 65,
     HPy_tp_repr = 66,
@@ -108,6 +109,7 @@ typedef enum {
 #define _HPySlot_SIG__HPy_nb_true_divide HPyFunc_BINARYFUNC
 #define _HPySlot_SIG__HPy_nb_xor HPyFunc_BINARYFUNC
 #define _HPySlot_SIG__HPy_sq_item HPyFunc_SSIZEARGFUNC
+#define _HPySlot_SIG__HPy_sq_length HPyFunc_LENFUNC
 #define _HPySlot_SIG__HPy_tp_init HPyFunc_INITPROC
 #define _HPySlot_SIG__HPy_tp_new HPyFunc_KEYWORDS
 #define _HPySlot_SIG__HPy_tp_repr HPyFunc_REPRFUNC

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/hpy/GraalHPyDef.java

@@ -191,6 +191,7 @@ enum HPySlot {
         HPY_NB_TRUE_DIVIDE(37, SpecialMethodNames.__TRUEDIV__, HPyFuncSignature.BINARYFUNC),
         HPY_NB_XOR(38, SpecialMethodNames.__XOR__, HPyFuncSignature.BINARYFUNC),
         HPY_SQ_ITEM(44, SpecialMethodNames.__GETITEM__, HPyFuncSignature.SSIZEARGFUNC),
+        HPY_SQ_LENGTH(45, SpecialMethodNames.__LEN__, HPyFuncSignature.LENFUNC),
         HPY_TP_INIT(60, SpecialMethodNames.__INIT__, HPyFuncSignature.INITPROC),
         HPY_TP_NEW(65, SpecialMethodNames.__NEW__, HPyFuncSignature.KEYWORDS),
         HPY_TP_REPR(66, SpecialMethodNames.__REPR__, HPyFuncSignature.REPRFUNC),