[이성범] 11주차 미션 제출 (#125)

8th_members/이성범/11주차.md

@@ -0,0 +1,74 @@
+# 11주차
+## str type 분석
+```c
+Objects/object.c
+
+INIT_TYPE(&PyUnicode_Type, "str");
+```
+- python의 str은 PyUnicode_Type 을 서용함
+
+```c
+Objects\unicodeobject.c
+
+PyTypeObject PyUnicode_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "str",                        /* tp_name */
+    sizeof(PyUnicodeObject),      /* tp_basicsize */
+    0,                            /* tp_itemsize */
+    /* Slots */
+    (destructor)unicode_dealloc,  /* tp_dealloc */
+    0,                            /* tp_vectorcall_offset */
+    0,                            /* tp_getattr */
+    0,                            /* tp_setattr */
+    0,                            /* tp_as_async */
+    unicode_repr,                 /* tp_repr */
+    &unicode_as_number,           /* tp_as_number */
+    &unicode_as_sequence,         /* tp_as_sequence */
+    &unicode_as_mapping,          /* tp_as_mapping */
+    (hashfunc) unicode_hash,      /* tp_hash*/
+    0,                            /* tp_call*/
+    (reprfunc) unicode_str,       /* tp_str */
+    PyObject_GenericGetAttr,      /* tp_getattro */
+    0,                            /* tp_setattro */
+    0,                            /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE |
+    Py_TPFLAGS_UNICODE_SUBCLASS,   /* tp_flags */
+    unicode_doc,                  /* tp_doc */
+    0,                            /* tp_traverse */
+    0,                            /* tp_clear */
+    PyUnicode_RichCompare,        /* tp_richcompare */
+    0,                            /* tp_weaklistoffset */
+    unicode_iter,                 /* tp_iter */
+    0,                            /* tp_iternext */
+    unicode_methods,              /* tp_methods */
+    0,                            /* tp_members */
+    0,                            /* tp_getset */
+    &PyBaseObject_Type,           /* tp_base */
+    0,                            /* tp_dict */
+    0,                            /* tp_descr_get */
+    0,                            /* tp_descr_set */
+    0,                            /* tp_dictoffset */
+    0,                            /* tp_init */
+    0,                            /* tp_alloc */
+    unicode_new,                  /* tp_new */
+    PyObject_Del,                 /* tp_free */
+};
+```
+- type 정의
+
+```c
+/* Strings allocated through PyUnicode_FromUnicode(NULL, len) use the
+   PyUnicodeObject structure. The actual string data is initially in the wstr
+   block, and copied into the data block using _PyUnicode_Ready. */
+typedef struct {
+    PyCompactUnicodeObject _base;
+    union {
+        void *any;
+        Py_UCS1 *latin1;
+        Py_UCS2 *ucs2;
+        Py_UCS4 *ucs4;
+    } data;                     /* Canonical, smallest-form Unicode buffer */
+} PyUnicodeObject;
+
+```
+- 구조체