add ydb deps

author: nkozlovskiy <nmk@ydb.tech> 2023-09-29 12:24:06 +0300
committer: nkozlovskiy <nmk@ydb.tech> 2023-09-29 12:41:34 +0300
commit: e0e3e1717e3d33762ce61950504f9637a6e669ed (patch)
tree: bca3ff6939b10ed60c3d5c12439963a1146b9711 /contrib/tools/python/src/Objects/codeobject.c
parent: 38f2c5852db84c7b4d83adfcb009eb61541d1ccd (diff)
download: ydb-e0e3e1717e3d33762ce61950504f9637a6e669ed.tar.gz
1 files changed, 765 insertions, 0 deletions
diff --git a/contrib/tools/python/src/Objects/codeobject.c b/contrib/tools/python/src/Objects/codeobject.c
new file mode 100644
index 0000000000..ab6cc70159
--- /dev/null
+++ b/contrib/tools/python/src/Objects/codeobject.c
@@ -0,0 +1,765 @@
+#include "Python.h"
+#include "code.h"
+#include "structmember.h"
+
+#define NAME_CHARS \
+    "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz"
+
+/* all_name_chars(s): true iff all chars in s are valid NAME_CHARS */
+
+static int
+all_name_chars(PyObject *o)
+{
+    static char ok_name_char[256];
+    static const unsigned char *name_chars = (unsigned char *)NAME_CHARS;
+    const unsigned char *s, *e;
+
+    if (ok_name_char[*name_chars] == 0) {
+        const unsigned char *p;
+        for (p = name_chars; *p; p++)
+            ok_name_char[*p] = 1;
+    }
+    s = (unsigned char *)PyString_AS_STRING(o);
+    e = s + PyString_GET_SIZE(o);
+    while (s != e) {
+        if (ok_name_char[*s++] == 0)
+            return 0;
+    }
+    return 1;
+}
+
+static void
+intern_strings(PyObject *tuple)
+{
+    Py_ssize_t i;
+
+    for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
+        PyObject *v = PyTuple_GET_ITEM(tuple, i);
+        if (v == NULL || !PyString_CheckExact(v)) {
+            Py_FatalError("non-string found in code slot");
+        }
+        PyString_InternInPlace(&PyTuple_GET_ITEM(tuple, i));
+    }
+}
+
+/* Intern selected string constants */
+static int
+intern_string_constants(PyObject *tuple)
+{
+    int modified = 0;
+    Py_ssize_t i;
+
+    for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) {
+        PyObject *v = PyTuple_GET_ITEM(tuple, i);
+        if (PyString_CheckExact(v)) {
+            if (all_name_chars(v)) {
+                PyObject *w = v;
+                PyString_InternInPlace(&v);
+                if (w != v) {
+                    PyTuple_SET_ITEM(tuple, i, v);
+                    modified = 1;
+                }
+            }
+        }
+        else if (PyTuple_CheckExact(v)) {
+            intern_string_constants(v);
+        }
+        else if (PyFrozenSet_CheckExact(v)) {
+            PyObject *w = v;
+            PyObject *tmp = PySequence_Tuple(v);
+            if (tmp == NULL) {
+                PyErr_Clear();
+                continue;
+            }
+            if (intern_string_constants(tmp)) {
+                v = PyFrozenSet_New(tmp);
+                if (v == NULL) {
+                    PyErr_Clear();
+                }
+                else {
+                    PyTuple_SET_ITEM(tuple, i, v);
+                    Py_DECREF(w);
+                    modified = 1;
+                }
+            }
+            Py_DECREF(tmp);
+        }
+    }
+    return modified;
+}
+
+
+PyCodeObject *
+PyCode_New(int argcount, int nlocals, int stacksize, int flags,
+           PyObject *code, PyObject *consts, PyObject *names,
+           PyObject *varnames, PyObject *freevars, PyObject *cellvars,
+           PyObject *filename, PyObject *name, int firstlineno,
+           PyObject *lnotab)
+{
+    PyCodeObject *co;
+    /* Check argument types */
+    if (argcount < 0 || nlocals < 0 ||
+        code == NULL ||
+        consts == NULL || !PyTuple_Check(consts) ||
+        names == NULL || !PyTuple_Check(names) ||
+        varnames == NULL || !PyTuple_Check(varnames) ||
+        freevars == NULL || !PyTuple_Check(freevars) ||
+        cellvars == NULL || !PyTuple_Check(cellvars) ||
+        name == NULL || !PyString_Check(name) ||
+        filename == NULL || !PyString_Check(filename) ||
+        lnotab == NULL || !PyString_Check(lnotab) ||
+        !PyObject_CheckReadBuffer(code)) {
+        PyErr_BadInternalCall();
+        return NULL;
+    }
+    intern_strings(names);
+    intern_strings(varnames);
+    intern_strings(freevars);
+    intern_strings(cellvars);
+    intern_string_constants(consts);
+    co = PyObject_NEW(PyCodeObject, &PyCode_Type);
+    if (co != NULL) {
+        co->co_argcount = argcount;
+        co->co_nlocals = nlocals;
+        co->co_stacksize = stacksize;
+        co->co_flags = flags;
+        Py_INCREF(code);
+        co->co_code = code;
+        Py_INCREF(consts);
+        co->co_consts = consts;
+        Py_INCREF(names);
+        co->co_names = names;
+        Py_INCREF(varnames);
+        co->co_varnames = varnames;
+        Py_INCREF(freevars);
+        co->co_freevars = freevars;
+        Py_INCREF(cellvars);
+        co->co_cellvars = cellvars;
+        Py_INCREF(filename);
+        co->co_filename = filename;
+        Py_INCREF(name);
+        co->co_name = name;
+        co->co_firstlineno = firstlineno;
+        Py_INCREF(lnotab);
+        co->co_lnotab = lnotab;
+        co->co_zombieframe = NULL;
+        co->co_weakreflist = NULL;
+    }
+    return co;
+}
+
+PyCodeObject *
+PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
+{
+    static PyObject *emptystring = NULL;
+    static PyObject *nulltuple = NULL;
+    PyObject *filename_ob = NULL;
+    PyObject *funcname_ob = NULL;
+    PyCodeObject *result = NULL;
+    if (emptystring == NULL) {
+        emptystring = PyString_FromString("");
+        if (emptystring == NULL)
+            goto failed;
+    }
+    if (nulltuple == NULL) {
+        nulltuple = PyTuple_New(0);
+        if (nulltuple == NULL)
+            goto failed;
+    }
+    funcname_ob = PyString_FromString(funcname);
+    if (funcname_ob == NULL)
+        goto failed;
+    filename_ob = PyString_FromString(filename);
+    if (filename_ob == NULL)
+        goto failed;
+
+    result = PyCode_New(0,                      /* argcount */
+                0,                              /* nlocals */
+                0,                              /* stacksize */
+                0,                              /* flags */
+                emptystring,                    /* code */
+                nulltuple,                      /* consts */
+                nulltuple,                      /* names */
+                nulltuple,                      /* varnames */
+                nulltuple,                      /* freevars */
+                nulltuple,                      /* cellvars */
+                filename_ob,                    /* filename */
+                funcname_ob,                    /* name */
+                firstlineno,                    /* firstlineno */
+                emptystring                     /* lnotab */
+                );
+
+failed:
+    Py_XDECREF(funcname_ob);
+    Py_XDECREF(filename_ob);
+    return result;
+}
+
+#define OFF(x) offsetof(PyCodeObject, x)
+
+static PyMemberDef code_memberlist[] = {
+    {"co_argcount",     T_INT,          OFF(co_argcount),       READONLY},
+    {"co_nlocals",      T_INT,          OFF(co_nlocals),        READONLY},
+    {"co_stacksize",T_INT,              OFF(co_stacksize),      READONLY},
+    {"co_flags",        T_INT,          OFF(co_flags),          READONLY},
+    {"co_code",         T_OBJECT,       OFF(co_code),           READONLY},
+    {"co_consts",       T_OBJECT,       OFF(co_consts),         READONLY},
+    {"co_names",        T_OBJECT,       OFF(co_names),          READONLY},
+    {"co_varnames",     T_OBJECT,       OFF(co_varnames),       READONLY},
+    {"co_freevars",     T_OBJECT,       OFF(co_freevars),       READONLY},
+    {"co_cellvars",     T_OBJECT,       OFF(co_cellvars),       READONLY},
+    {"co_filename",     T_OBJECT,       OFF(co_filename),       READONLY},
+    {"co_name",         T_OBJECT,       OFF(co_name),           READONLY},
+    {"co_firstlineno", T_INT,           OFF(co_firstlineno),    READONLY},
+    {"co_lnotab",       T_OBJECT,       OFF(co_lnotab),         READONLY},
+    {NULL}      /* Sentinel */
+};
+
+/* Helper for code_new: return a shallow copy of a tuple that is
+   guaranteed to contain exact strings, by converting string subclasses
+   to exact strings and complaining if a non-string is found. */
+static PyObject*
+validate_and_copy_tuple(PyObject *tup)
+{
+    PyObject *newtuple;
+    PyObject *item;
+    Py_ssize_t i, len;
+
+    len = PyTuple_GET_SIZE(tup);
+    newtuple = PyTuple_New(len);
+    if (newtuple == NULL)
+        return NULL;
+
+    for (i = 0; i < len; i++) {
+        item = PyTuple_GET_ITEM(tup, i);
+        if (PyString_CheckExact(item)) {
+            Py_INCREF(item);
+        }
+        else if (!PyString_Check(item)) {
+            PyErr_Format(
+                PyExc_TypeError,
+                "name tuples must contain only "
+                "strings, not '%.500s'",
+                item->ob_type->tp_name);
+            Py_DECREF(newtuple);
+            return NULL;
+        }
+        else {
+            item = PyString_FromStringAndSize(
+                PyString_AS_STRING(item),
+                PyString_GET_SIZE(item));
+            if (item == NULL) {
+                Py_DECREF(newtuple);
+                return NULL;
+            }
+        }
+        PyTuple_SET_ITEM(newtuple, i, item);
+    }
+
+    return newtuple;
+}
+
+PyDoc_STRVAR(code_doc,
+"code(argcount, nlocals, stacksize, flags, codestring, constants, names,\n\
+      varnames, filename, name, firstlineno, lnotab[, freevars[, cellvars]])\n\
+\n\
+Create a code object.  Not for the faint of heart.");
+
+static PyObject *
+code_new(PyTypeObject *type, PyObject *args, PyObject *kw)
+{
+    int argcount;
+    int nlocals;
+    int stacksize;
+    int flags;
+    PyObject *co = NULL;
+    PyObject *code;
+    PyObject *consts;
+    PyObject *names, *ournames = NULL;
+    PyObject *varnames, *ourvarnames = NULL;
+    PyObject *freevars = NULL, *ourfreevars = NULL;
+    PyObject *cellvars = NULL, *ourcellvars = NULL;
+    PyObject *filename;
+    PyObject *name;
+    int firstlineno;
+    PyObject *lnotab;
+
+    if (!PyArg_ParseTuple(args, "iiiiSO!O!O!SSiS|O!O!:code",
+                          &argcount, &nlocals, &stacksize, &flags,
+                          &code,
+                          &PyTuple_Type, &consts,
+                          &PyTuple_Type, &names,
+                          &PyTuple_Type, &varnames,
+                          &filename, &name,
+                          &firstlineno, &lnotab,
+                          &PyTuple_Type, &freevars,
+                          &PyTuple_Type, &cellvars))
+        return NULL;
+
+    if (argcount < 0) {
+        PyErr_SetString(
+            PyExc_ValueError,
+            "code: argcount must not be negative");
+        goto cleanup;
+    }
+
+    if (nlocals < 0) {
+        PyErr_SetString(
+            PyExc_ValueError,
+            "code: nlocals must not be negative");
+        goto cleanup;
+    }
+
+    ournames = validate_and_copy_tuple(names);
+    if (ournames == NULL)
+        goto cleanup;
+    ourvarnames = validate_and_copy_tuple(varnames);
+    if (ourvarnames == NULL)
+        goto cleanup;
+    if (freevars)
+        ourfreevars = validate_and_copy_tuple(freevars);
+    else
+        ourfreevars = PyTuple_New(0);
+    if (ourfreevars == NULL)
+        goto cleanup;
+    if (cellvars)
+        ourcellvars = validate_and_copy_tuple(cellvars);
+    else
+        ourcellvars = PyTuple_New(0);
+    if (ourcellvars == NULL)
+        goto cleanup;
+
+    co = (PyObject *)PyCode_New(argcount, nlocals, stacksize, flags,
+                                code, consts, ournames, ourvarnames,
+                                ourfreevars, ourcellvars, filename,
+                                name, firstlineno, lnotab);
+  cleanup:
+    Py_XDECREF(ournames);
+    Py_XDECREF(ourvarnames);
+    Py_XDECREF(ourfreevars);
+    Py_XDECREF(ourcellvars);
+    return co;
+}
+
+static void
+code_dealloc(PyCodeObject *co)
+{
+    Py_XDECREF(co->co_code);
+    Py_XDECREF(co->co_consts);
+    Py_XDECREF(co->co_names);
+    Py_XDECREF(co->co_varnames);
+    Py_XDECREF(co->co_freevars);
+    Py_XDECREF(co->co_cellvars);
+    Py_XDECREF(co->co_filename);
+    Py_XDECREF(co->co_name);
+    Py_XDECREF(co->co_lnotab);
+    if (co->co_zombieframe != NULL)
+        PyObject_GC_Del(co->co_zombieframe);
+    if (co->co_weakreflist != NULL)
+        PyObject_ClearWeakRefs((PyObject*)co);
+    PyObject_DEL(co);
+}
+
+static PyObject *
+code_repr(PyCodeObject *co)
+{
+    char buf[500];
+    int lineno = -1;
+    char *filename = "???";
+    char *name = "???";
+
+    if (co->co_firstlineno != 0)
+        lineno = co->co_firstlineno;
+    if (co->co_filename && PyString_Check(co->co_filename))
+        filename = PyString_AS_STRING(co->co_filename);
+    if (co->co_name && PyString_Check(co->co_name))
+        name = PyString_AS_STRING(co->co_name);
+    PyOS_snprintf(buf, sizeof(buf),
+                  "<code object %.100s at %p, file \"%.300s\", line %d>",
+                  name, co, filename, lineno);
+    return PyString_FromString(buf);
+}
+
+static int
+code_compare(PyCodeObject *co, PyCodeObject *cp)
+{
+    int cmp;
+    cmp = PyObject_Compare(co->co_name, cp->co_name);
+    if (cmp) return cmp;
+    cmp = co->co_argcount - cp->co_argcount;
+    if (cmp) goto normalize;
+    cmp = co->co_nlocals - cp->co_nlocals;
+    if (cmp) goto normalize;
+    cmp = co->co_flags - cp->co_flags;
+    if (cmp) goto normalize;
+    cmp = co->co_firstlineno - cp->co_firstlineno;
+    if (cmp) goto normalize;
+    cmp = PyObject_Compare(co->co_code, cp->co_code);
+    if (cmp) return cmp;
+    cmp = PyObject_Compare(co->co_consts, cp->co_consts);
+    if (cmp) return cmp;
+    cmp = PyObject_Compare(co->co_names, cp->co_names);
+    if (cmp) return cmp;
+    cmp = PyObject_Compare(co->co_varnames, cp->co_varnames);
+    if (cmp) return cmp;
+    cmp = PyObject_Compare(co->co_freevars, cp->co_freevars);
+    if (cmp) return cmp;
+    cmp = PyObject_Compare(co->co_cellvars, cp->co_cellvars);
+    return cmp;
+
+ normalize:
+    if (cmp > 0)
+        return 1;
+    else if (cmp < 0)
+        return -1;
+    else
+        return 0;
+}
+
+PyObject*
+_PyCode_ConstantKey(PyObject *op)
+{
+    PyObject *key;
+
+    /* Py_None is a singleton */
+    if (op == Py_None
+        || _PyAnyInt_CheckExact(op)
+        || PyBool_Check(op)
+        || PyBytes_CheckExact(op)
+#ifdef Py_USING_UNICODE
+       || PyUnicode_CheckExact(op)
+#endif
+          /* code_richcompare() uses _PyCode_ConstantKey() internally */
+       || PyCode_Check(op)) {
+        key = PyTuple_Pack(2, Py_TYPE(op), op);
+    }
+    else if (PyFloat_CheckExact(op)) {
+        double d = PyFloat_AS_DOUBLE(op);
+        /* all we need is to make the tuple different in either the 0.0
+         * or -0.0 case from all others, just to avoid the "coercion".
+         */
+        if (d == 0.0 && copysign(1.0, d) < 0.0)
+            key = PyTuple_Pack(3, Py_TYPE(op), op, Py_None);
+        else
+            key = PyTuple_Pack(2, Py_TYPE(op), op);
+    }
+#ifndef WITHOUT_COMPLEX
+    else if (PyComplex_CheckExact(op)) {
+        Py_complex z;
+        int real_negzero, imag_negzero;
+        /* For the complex case we must make complex(x, 0.)
+           different from complex(x, -0.) and complex(0., y)
+           different from complex(-0., y), for any x and y.
+           All four complex zeros must be distinguished.*/
+        z = PyComplex_AsCComplex(op);
+        real_negzero = z.real == 0.0 && copysign(1.0, z.real) < 0.0;
+        imag_negzero = z.imag == 0.0 && copysign(1.0, z.imag) < 0.0;
+        /* use True, False and None singleton as tags for the real and imag
+         * sign, to make tuples different */
+        if (real_negzero && imag_negzero) {
+            key = PyTuple_Pack(3, Py_TYPE(op), op, Py_True);
+        }
+        else if (imag_negzero) {
+            key = PyTuple_Pack(3, Py_TYPE(op), op, Py_False);
+        }
+        else if (real_negzero) {
+            key = PyTuple_Pack(3, Py_TYPE(op), op, Py_None);
+        }
+        else {
+            key = PyTuple_Pack(2, Py_TYPE(op), op);
+        }
+    }
+#endif
+    else if (PyTuple_CheckExact(op)) {
+        Py_ssize_t i, len;
+        PyObject *tuple;
+
+        len = PyTuple_GET_SIZE(op);
+        tuple = PyTuple_New(len);
+        if (tuple == NULL)
+            return NULL;
+
+        for (i=0; i < len; i++) {
+            PyObject *item, *item_key;
+
+            item = PyTuple_GET_ITEM(op, i);
+            item_key = _PyCode_ConstantKey(item);
+            if (item_key == NULL) {
+                Py_DECREF(tuple);
+                return NULL;
+            }
+
+            PyTuple_SET_ITEM(tuple, i, item_key);
+        }
+
+        key = PyTuple_Pack(3, Py_TYPE(op), op, tuple);
+        Py_DECREF(tuple);
+    }
+    else if (PyFrozenSet_CheckExact(op)) {
+        Py_ssize_t pos = 0;
+        PyObject *item;
+        long hash;
+        Py_ssize_t i, len;
+        PyObject *tuple, *set;
+
+        len = PySet_GET_SIZE(op);
+        tuple = PyTuple_New(len);
+        if (tuple == NULL)
+            return NULL;
+
+        i = 0;
+        while (_PySet_NextEntry(op, &pos, &item, &hash)) {
+            PyObject *item_key;
+
+            item_key = _PyCode_ConstantKey(item);
+            if (item_key == NULL) {
+                Py_DECREF(tuple);
+                return NULL;
+            }
+
+            assert(i < len);
+            PyTuple_SET_ITEM(tuple, i, item_key);
+            i++;
+        }
+        set = PyFrozenSet_New(tuple);
+        Py_DECREF(tuple);
+        if (set == NULL)
+            return NULL;
+
+        key = PyTuple_Pack(3, Py_TYPE(op), op, set);
+        Py_DECREF(set);
+        return key;
+    }
+    else {
+        /* for other types, use the object identifier as a unique identifier
+         * to ensure that they are seen as unequal. */
+        PyObject *obj_id = PyLong_FromVoidPtr(op);
+        if (obj_id == NULL)
+            return NULL;
+
+        key = PyTuple_Pack(3, Py_TYPE(op), op, obj_id);
+        Py_DECREF(obj_id);
+    }
+    return key;
+}
+
+static PyObject *
+code_richcompare(PyObject *self, PyObject *other, int op)
+{
+    PyCodeObject *co, *cp;
+    int eq;
+    PyObject *consts1, *consts2;
+    PyObject *res;
+
+    if ((op != Py_EQ && op != Py_NE) ||
+        !PyCode_Check(self) ||
+        !PyCode_Check(other)) {
+
+        /* Py3K warning if types are not equal and comparison
+        isn't == or !=  */
+        if (PyErr_WarnPy3k("code inequality comparisons not supported "
+                           "in 3.x", 1) < 0) {
+            return NULL;
+        }
+
+        Py_INCREF(Py_NotImplemented);
+        return Py_NotImplemented;
+    }
+
+    co = (PyCodeObject *)self;
+    cp = (PyCodeObject *)other;
+
+    eq = PyObject_RichCompareBool(co->co_name, cp->co_name, Py_EQ);
+    if (eq <= 0) goto unequal;
+    eq = co->co_argcount == cp->co_argcount;
+    if (!eq) goto unequal;
+    eq = co->co_nlocals == cp->co_nlocals;
+    if (!eq) goto unequal;
+    eq = co->co_flags == cp->co_flags;
+    if (!eq) goto unequal;
+    eq = co->co_firstlineno == cp->co_firstlineno;
+    if (!eq) goto unequal;
+    eq = PyObject_RichCompareBool(co->co_code, cp->co_code, Py_EQ);
+    if (eq <= 0) goto unequal;
+
+    /* compare constants */
+    consts1 = _PyCode_ConstantKey(co->co_consts);
+    if (!consts1)
+        return NULL;
+    consts2 = _PyCode_ConstantKey(cp->co_consts);
+    if (!consts2) {
+        Py_DECREF(consts1);
+        return NULL;
+    }
+    eq = PyObject_RichCompareBool(consts1, consts2, Py_EQ);
+    Py_DECREF(consts1);
+    Py_DECREF(consts2);
+    if (eq <= 0) goto unequal;
+
+    eq = PyObject_RichCompareBool(co->co_names, cp->co_names, Py_EQ);
+    if (eq <= 0) goto unequal;
+    eq = PyObject_RichCompareBool(co->co_varnames, cp->co_varnames, Py_EQ);
+    if (eq <= 0) goto unequal;
+    eq = PyObject_RichCompareBool(co->co_freevars, cp->co_freevars, Py_EQ);
+    if (eq <= 0) goto unequal;
+    eq = PyObject_RichCompareBool(co->co_cellvars, cp->co_cellvars, Py_EQ);
+    if (eq <= 0) goto unequal;
+
+    if (op == Py_EQ)
+        res = Py_True;
+    else
+        res = Py_False;
+    goto done;
+
+  unequal:
+    if (eq < 0)
+        return NULL;
+    if (op == Py_NE)
+        res = Py_True;
+    else
+        res = Py_False;
+
+  done:
+    Py_INCREF(res);
+    return res;
+}
+
+static long
+code_hash(PyCodeObject *co)
+{
+    long h, h0, h1, h2, h3, h4, h5, h6;
+    h0 = PyObject_Hash(co->co_name);
+    if (h0 == -1) return -1;
+    h1 = PyObject_Hash(co->co_code);
+    if (h1 == -1) return -1;
+    h2 = PyObject_Hash(co->co_consts);
+    if (h2 == -1) return -1;
+    h3 = PyObject_Hash(co->co_names);
+    if (h3 == -1) return -1;
+    h4 = PyObject_Hash(co->co_varnames);
+    if (h4 == -1) return -1;
+    h5 = PyObject_Hash(co->co_freevars);
+    if (h5 == -1) return -1;
+    h6 = PyObject_Hash(co->co_cellvars);
+    if (h6 == -1) return -1;
+    h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^ h5 ^ h6 ^
+        co->co_argcount ^ co->co_nlocals ^ co->co_flags;
+    if (h == -1) h = -2;
+    return h;
+}
+
+/* XXX code objects need to participate in GC? */
+
+PyTypeObject PyCode_Type = {
+    PyVarObject_HEAD_INIT(&PyType_Type, 0)
+    "code",
+    sizeof(PyCodeObject),
+    0,
+    (destructor)code_dealloc,           /* tp_dealloc */
+    0,                                  /* tp_print */
+    0,                                  /* tp_getattr */
+    0,                                  /* tp_setattr */
+    (cmpfunc)code_compare,              /* tp_compare */
+    (reprfunc)code_repr,                /* tp_repr */
+    0,                                  /* tp_as_number */
+    0,                                  /* tp_as_sequence */
+    0,                                  /* tp_as_mapping */
+    (hashfunc)code_hash,                /* tp_hash */
+    0,                                  /* tp_call */
+    0,                                  /* tp_str */
+    PyObject_GenericGetAttr,            /* tp_getattro */
+    0,                                  /* tp_setattro */
+    0,                                  /* tp_as_buffer */
+    Py_TPFLAGS_DEFAULT,                 /* tp_flags */
+    code_doc,                           /* tp_doc */
+    0,                                  /* tp_traverse */
+    0,                                  /* tp_clear */
+    code_richcompare,                   /* tp_richcompare */
+    offsetof(PyCodeObject, co_weakreflist), /* tp_weaklistoffset */
+    0,                                  /* tp_iter */
+    0,                                  /* tp_iternext */
+    0,                                  /* tp_methods */
+    code_memberlist,                    /* tp_members */
+    0,                                  /* tp_getset */
+    0,                                  /* tp_base */
+    0,                                  /* tp_dict */
+    0,                                  /* tp_descr_get */
+    0,                                  /* tp_descr_set */
+    0,                                  /* tp_dictoffset */
+    0,                                  /* tp_init */
+    0,                                  /* tp_alloc */
+    code_new,                           /* tp_new */
+};
+
+/* Use co_lnotab to compute the line number from a bytecode index, addrq.  See
+   lnotab_notes.txt for the details of the lnotab representation.
+*/
+
+int
+PyCode_Addr2Line(PyCodeObject *co, int addrq)
+{
+    int size = PyString_Size(co->co_lnotab) / 2;
+    unsigned char *p = (unsigned char*)PyString_AsString(co->co_lnotab);
+    int line = co->co_firstlineno;
+    int addr = 0;
+    while (--size >= 0) {
+        addr += *p++;
+        if (addr > addrq)
+            break;
+        line += (signed char)*p;
+        p++;
+    }
+    return line;
+}
+
+/* Update *bounds to describe the first and one-past-the-last instructions in
+   the same line as lasti.  Return the number of that line. */
+int
+_PyCode_CheckLineNumber(PyCodeObject* co, int lasti, PyAddrPair *bounds)
+{
+    int size, addr, line;
+    unsigned char* p;
+
+    p = (unsigned char*)PyString_AS_STRING(co->co_lnotab);
+    size = PyString_GET_SIZE(co->co_lnotab) / 2;
+
+    addr = 0;
+    line = co->co_firstlineno;
+    assert(line > 0);
+
+    /* possible optimization: if f->f_lasti == instr_ub
+       (likely to be a common case) then we already know
+       instr_lb -- if we stored the matching value of p
+       somewhere we could skip the first while loop. */
+
+    /* See lnotab_notes.txt for the description of
+       co_lnotab.  A point to remember: increments to p
+       come in (addr, line) pairs. */
+
+    bounds->ap_lower = 0;
+    while (size > 0) {
+        if (addr + *p > lasti)
+            break;
+        addr += *p++;
+        if ((signed char)*p)
+            bounds->ap_lower = addr;
+        line += (signed char)*p;
+        p++;
+        --size;
+    }
+
+    if (size > 0) {
+        while (--size >= 0) {
+            addr += *p++;
+            if ((signed char)*p)
+                break;
+            p++;
+        }
+        bounds->ap_upper = addr;
+    }
+    else {
+        bounds->ap_upper = INT_MAX;
+    }
+
+    return line;
+}
author	nkozlovskiy <nmk@ydb.tech>	2023-09-29 12:24:06 +0300
committer	nkozlovskiy <nmk@ydb.tech>	2023-09-29 12:41:34 +0300
commit	e0e3e1717e3d33762ce61950504f9637a6e669ed (patch)
tree	bca3ff6939b10ed60c3d5c12439963a1146b9711 /contrib/tools/python/src/Objects/codeobject.c
parent	38f2c5852db84c7b4d83adfcb009eb61541d1ccd (diff)
download	ydb-e0e3e1717e3d33762ce61950504f9637a6e669ed.tar.gz