[FFI] Change enumeration name in DGLObjectTypeCode to avoid conflict with Pytorch (#4905)

include/dgl/runtime/c_runtime_api.h

@@ -64,9 +64,9 @@ typedef enum {
  *        objects passed between C and Python.
  */
 typedef enum {
-  kInt = 0U,
-  kUInt = 1U,
-  kFloat = 2U,
+  kObjectInt = 0U,
+  kObjectUInt = 1U,
+  kObjectFloat = 2U,
   kHandle = 3U,
   kNull = 4U,
   kDGLDataType = 5U,

python/dgl/_ffi/_cython/base.pxi

@@ -7,9 +7,9 @@ from libc.stdint cimport int32_t, int64_t, uint64_t, uint8_t, uint16_t
 import ctypes
 
 cdef enum DGLObjectTypeCode:
-    kInt = 0
-    kUInt = 1
-    kFloat = 2
+    kObjectInt = 0
+    kObjectUInt = 1
+    kObjectFloat = 2
     kHandle = 3
     kNull = 4
     kDGLDataType = 5

python/dgl/_ffi/_cython/function.pxi

@@ -94,10 +94,10 @@ cdef inline int make_arg(object arg,
         tcode[0] = arg.__class__._dgl_tcode
     elif isinstance(arg, (int, long)):
         value[0].v_int64 = arg
-        tcode[0] = kInt
+        tcode[0] = kObjectInt
     elif isinstance(arg, float):
         value[0].v_float64 = arg
-        tcode[0] = kFloat
+        tcode[0] = kObjectFloat
     elif isinstance(arg, str):
         tstr = c_str(arg)
         value[0].v_str = tstr
@@ -108,7 +108,7 @@ cdef inline int make_arg(object arg,
         tcode[0] = kNull
     elif isinstance(arg, Number):
         value[0].v_float64 = arg
-        tcode[0] = kFloat
+        tcode[0] = kObjectFloat
     elif isinstance(arg, CTypesDGLDataType):
         tstr = c_str(str(arg))
         value[0].v_str = tstr
@@ -172,9 +172,9 @@ cdef inline object make_ret(DGLValue value, int tcode):
         return make_ret_object(value.v_handle)
     elif tcode == kNull:
         return None
-    elif tcode == kInt:
+    elif tcode == kObjectInt:
         return value.v_int64
-    elif tcode == kFloat:
+    elif tcode == kObjectFloat:
         return value.v_float64
     elif tcode == kNDArrayContainer:
         return c_make_array(value.v_handle, False)