/home/mdboom/Work/builds/cpython/Python/future.c

Source (jump to first uncovered line)
#include "Python.h"
#include "pycore_ast.h"           // _PyAST_GetDocString()

#define UNDEFINED_FUTURE_FEATURE "future feature %.100s is not defined"
#define ERR_LATE_FUTURE \
"from __future__ imports must occur at the beginning of the file"

static int
future_check_features(PyFutureFeatures *ff, stmt_ty s, PyObject *filename)
{
    int i;

    assert(s->kind == ImportFrom_kind);

    asdl_alias_seq *names = s->v.ImportFrom.names;
    for (i = 0; i < asdl_seq_LEN(names); i++216) {
        alias_ty name = (alias_ty)asdl_seq_GET(names, i);
        const char *feature = PyUnicode_AsUTF8(name->name);
        if (!feature)
            return 0;
        if (strcmp(feature, FUTURE_NESTED_SCOPES) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_GENERATORS) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_DIVISION) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_ABSOLUTE_IMPORT) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_WITH_STATEMENT) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_PRINT_FUNCTION) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_UNICODE_LITERALS) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_BARRY_AS_BDFL) == 0) {
            ff->ff_features |= CO_FUTURE_BARRY_AS_BDFL;
        } else if (strcmp(feature, FUTURE_GENERATOR_STOP) == 0) {
            continue;
        } else if (strcmp(feature, FUTURE_ANNOTATIONS) == 0) {
            ff->ff_features |= CO_FUTURE_ANNOTATIONS;
        } else if (8strcmp(feature, "braces") == 08) {
            PyErr_SetString(PyExc_SyntaxError,
                            "not a chance");
            PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
            return 0;
        } else {
            PyErr_Format(PyExc_SyntaxError,
                         UNDEFINED_FUTURE_FEATURE, feature);
            PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
            return 0;
        }
    }
    return 1;
}

static int
future_parse(PyFutureFeatures *ff, mod_ty mod, PyObject *filename)
{
    int i, done = 0, prev_line = 0;

    if (!(mod->kind == Module_kind || mod->kind == Interactive_kind40.0k))
        return 1;

    if (asdl_seq_LEN(mod->v.Module.body) == 0)
        return 1;

    /* A subsequent pass will detect future imports that don't
       appear at the beginning of the file.  There's one case,
       however, that is easier to handle here: A series of imports
       joined by semi-colons, where the first import is a future
       statement but some subsequent import has the future form
       but is preceded by a regular import.
    */

    i = 0;
    if (_PyAST_GetDocString(mod->v.Module.body) != NULL)
        i++;

    for (; i < asdl_seq_LEN(mod->v.Module.body); i++13.0k) {
        stmt_ty s = (stmt_ty)asdl_seq_GET(mod->v.Module.body, i);

        if (done && s->lineno > prev_line1.87k)
            return 1;
        prev_line = s->lineno;

        /* The tests below will return from this function unless it is
           still possible to find a future statement.  The only things
           that can precede a future statement are another future
           statement and a doc string.
        */

        if (s->kind == ImportFrom_kind) {
            identifier modname = s->v.ImportFrom.module;
            if (modname &&
                _PyUnicode_EqualToASCIIString(modname, "__future__")676) {
                if (done) {
                    PyErr_SetString(PyExc_SyntaxError,
                                    ERR_LATE_FUTURE);
                    PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset);
                    return 0;
                }
                if (!future_check_features(ff, s, filename))
                    return 0;
                ff->ff_lineno = s->lineno;
            }
            else {
                done = 1;
            }
        }
        else {
            done = 1;
        }
    }
    return 1;
}


PyFutureFeatures *
_PyFuture_FromAST(mod_ty mod, PyObject *filename)
{
    PyFutureFeatures *ff;

    ff = (PyFutureFeatures *)PyObject_Malloc(sizeof(PyFutureFeatures));
    if (ff == NULL) {
        PyErr_NoMemory();
        return NULL;
    }
    ff->ff_features = 0;
    ff->ff_lineno = -1;

    if (!future_parse(ff, mod, filename)) {
        PyObject_Free(ff);
        return NULL;
    }
    return ff;
}

Line	Count	Source (jump to first uncovered line)
1	#include "Python.h"
2	#include "pycore_ast.h" // _PyAST_GetDocString()
3
4	#define UNDEFINED_FUTURE_FEATURE "future feature %.100s is not defined"
5	#define ERR_LATE_FUTURE \
6	"from __future__ imports must occur at the beginning of the file"
7
8	static int
9	future_check_features(PyFutureFeatures ff, stmt_ty s, PyObject filename)
10	{
11	int i;
12
13	assert(s->kind == ImportFrom_kind);
14
15	asdl_alias_seq *names = s->v.ImportFrom.names;
16	for (i = 0; i < asdl_seq_LEN(names); i++216 ) { Branch (16:17): [True: 224, False: 211]
17	alias_ty name = (alias_ty)asdl_seq_GET(names, i);
18	const char *feature = PyUnicode_AsUTF8(name->name);
19	if (!feature) Branch (19:13): [True: 0, False: 224]
20	return 0;
21	if (strcmp(feature, FUTURE_NESTED_SCOPES) == 0) { Branch (21:13): [True: 11, False: 213]
22	continue;
23	} else if (strcmp(feature, FUTURE_GENERATORS) == 0) { Branch (23:20): [True: 3, False: 210]
24	continue;
25	} else if (strcmp(feature, FUTURE_DIVISION) == 0) { Branch (25:20): [True: 1, False: 209]
26	continue;
27	} else if (strcmp(feature, FUTURE_ABSOLUTE_IMPORT) == 0) { Branch (27:20): [True: 12, False: 197]
28	continue;
29	} else if (strcmp(feature, FUTURE_WITH_STATEMENT) == 0) { Branch (29:20): [True: 0, False: 197]
30	continue;
31	} else if (strcmp(feature, FUTURE_PRINT_FUNCTION) == 0) { Branch (31:20): [True: 0, False: 197]
32	continue;
33	} else if (strcmp(feature, FUTURE_UNICODE_LITERALS) == 0) { Branch (33:20): [True: 1, False: 196]
34	continue;
35	} else if (strcmp(feature, FUTURE_BARRY_AS_BDFL) == 0) { Branch (35:20): [True: 1, False: 195]
36	ff->ff_features \|= CO_FUTURE_BARRY_AS_BDFL;
37	} else if (strcmp(feature, FUTURE_GENERATOR_STOP) == 0) { Branch (37:20): [True: 1, False: 194]
38	continue;
39	} else if (strcmp(feature, FUTURE_ANNOTATIONS) == 0) { Branch (39:20): [True: 186, False: 8]
40	ff->ff_features \|= CO_FUTURE_ANNOTATIONS;
41	} else if (8 strcmp(feature, "braces") == 08 ) { Branch (41:20): [True: 3, False: 5]
42	PyErr_SetString(PyExc_SyntaxError,
43	"not a chance");
44	PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
45	return 0;
46	} else {
47	PyErr_Format(PyExc_SyntaxError,
48	UNDEFINED_FUTURE_FEATURE, feature);
49	PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset + 1);
50	return 0;
51	}
52	}
53	return 1;
54	}
55
56	static int
57	future_parse(PyFutureFeatures ff, mod_ty mod, PyObject filename)
58	{
59	int i, done = 0, prev_line = 0;
60
61	if (!(mod->kind == Module_kind \|\| mod->kind == Interactive_kind40.0k )) Branch (61:11): [True: 8.78k, False: 40.0k] Branch (61:39): [True: 4.10k, False: 35.9k]
62	return 1;
63
64	if (asdl_seq_LEN(mod->v.Module.body) == 0) Branch (64:9): [True: 299, False: 12.5k]
65	return 1;
66
67	/* A subsequent pass will detect future imports that don't
68	appear at the beginning of the file. There's one case,
69	however, that is easier to handle here: A series of imports
70	joined by semi-colons, where the first import is a future
71	statement but some subsequent import has the future form
72	but is preceded by a regular import.
73	*/
74
75	i = 0;
76	if (_PyAST_GetDocString(mod->v.Module.body) != NULL) Branch (76:9): [True: 317, False: 12.2k]
77	i++;
78
79	for (; i < asdl_seq_LEN(mod->v.Module.body); i++13.0k ) { Branch (79:12): [True: 14.6k, False: 11.0k]
80	stmt_ty s = (stmt_ty)asdl_seq_GET(mod->v.Module.body, i);
81
82	if (done && s->lineno > prev_line1.87k ) Branch (82:13): [True: 1.87k, False: 12.7k] Branch (82:21): [True: 1.57k, False: 303]
83	return 1;
84	prev_line = s->lineno;
85
86	/* The tests below will return from this function unless it is
87	still possible to find a future statement. The only things
88	that can precede a future statement are another future
89	statement and a doc string.
90	*/
91
92	if (s->kind == ImportFrom_kind) { Branch (92:13): [True: 693, False: 12.3k]
93	identifier modname = s->v.ImportFrom.module;
94	if (modname && Branch (94:17): [True: 676, False: 17]
95	_PyUnicode_EqualToASCIIString(modname, "__future__")676 ) { Branch (95:17): [True: 221, False: 455]
96	if (done) { Branch (96:21): [True: 2, False: 219]
97	PyErr_SetString(PyExc_SyntaxError,
98	ERR_LATE_FUTURE);
99	PyErr_SyntaxLocationObject(filename, s->lineno, s->col_offset);
100	return 0;
101	}
102	if (!future_check_features(ff, s, filename)) Branch (102:21): [True: 8, False: 211]
103	return 0;
104	ff->ff_lineno = s->lineno;
105	}
106	else {
107	done = 1;
108	}
109	}
110	else {
111	done = 1;
112	}
113	}
114	return 1;
115	}
116
117
118	PyFutureFeatures *
119	_PyFuture_FromAST(mod_ty mod, PyObject *filename)
120	{
121	PyFutureFeatures *ff;
122
123	ff = (PyFutureFeatures *)PyObject_Malloc(sizeof(PyFutureFeatures));
124	if (ff == NULL) { Branch (124:9): [True: 0, False: 48.8k]
125	PyErr_NoMemory();
126	return NULL;
127	}
128	ff->ff_features = 0;
129	ff->ff_lineno = -1;
130
131	if (!future_parse(ff, mod, filename)) { Branch (131:9): [True: 10, False: 48.7k]
132	PyObject_Free(ff);
133	return NULL;
134	}
135	return ff;
136	}

Coverage Report

Created: 2022-07-08 09:39