/src/cpython3/Parser/tokenizer/helpers.c

Source
#include "Python.h"
#include "errcode.h"
#include "pycore_runtime.h"       // _Py_ID()
#include "pycore_token.h"
#include "pycore_tuple.h"         // _PyTuple_FromPair

#include "../lexer/state.h"


/* ############## ERRORS ############## */

static int
_syntaxerror_range(struct tok_state *tok, const char *format,
                   int col_offset, int end_col_offset,
                   va_list vargs)
{
    // In release builds, we don't want to overwrite a previous error, but in debug builds we
    // want to fail if we are not doing it so we can fix it.
    assert(tok->done != E_ERROR);
    if (tok->done == E_ERROR) {
        return ERRORTOKEN;
    }
    PyObject *errmsg, *errtext, *args;
    errmsg = PyUnicode_FromFormatV(format, vargs);
    if (!errmsg) {
        goto error;
    }

    errtext = PyUnicode_DecodeUTF8(tok->line_start, tok->cur - tok->line_start,
                                   "replace");
    if (!errtext) {
        goto error;
    }

    if (col_offset == -1) {
        col_offset = (int)PyUnicode_GET_LENGTH(errtext);
    }
    if (end_col_offset == -1) {
        end_col_offset = col_offset;
    }

    Py_ssize_t line_len = strcspn(tok->line_start, "\n");
    if (line_len != tok->cur - tok->line_start) {
        Py_DECREF(errtext);
        errtext = PyUnicode_DecodeUTF8(tok->line_start, line_len,
                                       "replace");
    }
    if (!errtext) {
        goto error;
    }

    args = Py_BuildValue("(O(OiiNii))", errmsg,
                         tok->filename ? tok->filename : Py_None,
                         tok->lineno, col_offset, errtext,
                         tok->lineno, end_col_offset);
    if (args) {
        PyErr_SetObject(PyExc_SyntaxError, args);
        Py_DECREF(args);
    }

error:
    Py_XDECREF(errmsg);
    tok->done = E_ERROR;
    return ERRORTOKEN;
}

int
_PyTokenizer_syntaxerror(struct tok_state *tok, const char *format, ...)
{
    // These errors are cleaned on startup. Todo: Fix it.
    va_list vargs;
    va_start(vargs, format);
    int ret = _syntaxerror_range(tok, format, -1, -1, vargs);
    va_end(vargs);
    return ret;
}

int
_PyTokenizer_syntaxerror_known_range(struct tok_state *tok,
                        int col_offset, int end_col_offset,
                        const char *format, ...)
{
    va_list vargs;
    va_start(vargs, format);
    int ret = _syntaxerror_range(tok, format, col_offset, end_col_offset, vargs);
    va_end(vargs);
    return ret;
}

int
_PyTokenizer_indenterror(struct tok_state *tok)
{
    tok->done = E_TABSPACE;
    tok->cur = tok->inp;
    return ERRORTOKEN;
}

int
_PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char)
{
    if (!tok->report_warnings) {
        return 0;
    }

    PyObject *msg = PyUnicode_FromFormat(
        "\"\\%c\" is an invalid escape sequence. "
        "Such sequences will not work in the future. "
        "Did you mean \"\\\\%c\"? A raw string is also an option.",
        (char) first_invalid_escape_char,
        (char) first_invalid_escape_char
    );

    if (msg == NULL) {
        return -1;
    }

    if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg, tok->filename,
                                 tok->lineno, tok->module, NULL) < 0) {
        Py_DECREF(msg);

        if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
            /* Replace the SyntaxWarning exception with a SyntaxError
               to get a more accurate error report */
            PyErr_Clear();

            return _PyTokenizer_syntaxerror(tok,
                "\"\\%c\" is an invalid escape sequence. "
                "Did you mean \"\\\\%c\"? A raw string is also an option.",
                (char) first_invalid_escape_char,
                (char) first_invalid_escape_char);
        }

        return -1;
    }

    Py_DECREF(msg);
    return 0;
}

void
_PyTokenizer_raise_init_error(PyObject *filename)
{
    if (!(PyErr_ExceptionMatches(PyExc_LookupError)
          || PyErr_ExceptionMatches(PyExc_SyntaxError)
          || PyErr_ExceptionMatches(PyExc_ValueError)
          || PyErr_ExceptionMatches(PyExc_UnicodeDecodeError))) {
        return;
    }
    PyObject *errstr = NULL;
    PyObject *tuple = NULL;
    PyObject *type;
    PyObject *value;
    PyObject *tback;
    PyErr_Fetch(&type, &value, &tback);
    if (PyErr_GivenExceptionMatches(value, PyExc_SyntaxError)) {
        if (PyObject_SetAttr(value, &_Py_ID(filename), filename)) {
            goto error;
        }
        PyErr_Restore(type, value, tback);
        return;
    }
    errstr = PyObject_Str(value);
    if (!errstr) {
        goto error;
    }

    PyObject *tmp = Py_BuildValue("(OiiO)", filename, 0, -1, Py_None);
    if (!tmp) {
        goto error;
    }

    tuple = _PyTuple_FromPair(errstr, tmp);
    Py_DECREF(tmp);
    if (!tuple) {
        goto error;
    }
    PyErr_SetObject(PyExc_SyntaxError, tuple);

error:
    Py_XDECREF(type);
    Py_XDECREF(value);
    Py_XDECREF(tback);
    Py_XDECREF(errstr);
    Py_XDECREF(tuple);
}

int
_PyTokenizer_parser_warn(struct tok_state *tok, PyObject *category, const char *format, ...)
{
    if (!tok->report_warnings) {
        return 0;
    }

    PyObject *errmsg;
    va_list vargs;
    va_start(vargs, format);
    errmsg = PyUnicode_FromFormatV(format, vargs);
    va_end(vargs);
    if (!errmsg) {
        goto error;
    }

    if (PyErr_WarnExplicitObject(category, errmsg, tok->filename,
                                 tok->lineno, tok->module, NULL) < 0) {
        if (PyErr_ExceptionMatches(category)) {
            /* Replace the DeprecationWarning exception with a SyntaxError
               to get a more accurate error report */
            PyErr_Clear();
            _PyTokenizer_syntaxerror(tok, "%U", errmsg);
        }
        goto error;
    }
    Py_DECREF(errmsg);
    return 0;

error:
    Py_XDECREF(errmsg);
    tok->done = E_ERROR;
    return -1;
}


/* Check whether the characters at s start a valid
   UTF-8 sequence. Return the number of characters forming
   the sequence if yes, 0 if not.  The special cases match
   those in stringlib/codecs.h:utf8_decode.
*/
static int
valid_utf8(const unsigned char* s)
{
    int expected = 0;
    int length;
    if (*s < 0x80) {
        /* single-byte code */
        return 1;
    }
    else if (*s < 0xE0) {
        /* \xC2\x80-\xDF\xBF -- 0080-07FF */
        if (*s < 0xC2) {
            /* invalid sequence
               \x80-\xBF -- continuation byte
               \xC0-\xC1 -- fake 0000-007F */
            return 0;
        }
        expected = 1;
    }
    else if (*s < 0xF0) {
        /* \xE0\xA0\x80-\xEF\xBF\xBF -- 0800-FFFF */
        if (*s == 0xE0 && *(s + 1) < 0xA0) {
            /* invalid sequence
               \xE0\x80\x80-\xE0\x9F\xBF -- fake 0000-0800 */
            return 0;
        }
        else if (*s == 0xED && *(s + 1) >= 0xA0) {
            /* Decoding UTF-8 sequences in range \xED\xA0\x80-\xED\xBF\xBF
               will result in surrogates in range D800-DFFF. Surrogates are
               not valid UTF-8 so they are rejected.
               See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf
               (table 3-7) and http://www.rfc-editor.org/rfc/rfc3629.txt */
            return 0;
        }
        expected = 2;
    }
    else if (*s < 0xF5) {
        /* \xF0\x90\x80\x80-\xF4\x8F\xBF\xBF -- 10000-10FFFF */
        if (*(s + 1) < 0x90 ? *s == 0xF0 : *s == 0xF4) {
            /* invalid sequence -- one of:
               \xF0\x80\x80\x80-\xF0\x8F\xBF\xBF -- fake 0000-FFFF
               \xF4\x90\x80\x80- -- 110000- overflow */
            return 0;
        }
        expected = 3;
    }
    else {
        /* invalid start byte */
        return 0;
    }
    length = expected + 1;
    for (int i = 1; i <= expected; i++) {
        if (s[i] < 0x80 || s[i] >= 0xC0) {
            return 0;
        }
    }
    return length;
}

int
_PyTokenizer_ensure_utf8(const char *line, struct tok_state *tok, int lineno)
{
    const char *badchar = NULL;
    const char *c;
    int length;
    int col_offset = 0;
    const char *line_start = line;
    for (c = line; *c; c += length) {
        if (!(length = valid_utf8((const unsigned char *)c))) {
            badchar = c;
            break;
        }
        col_offset++;
        if (*c == '\n') {
            lineno++;
            col_offset = 0;
            line_start = c + 1;
        }
    }
    if (badchar) {
        tok->lineno = lineno;
        tok->line_start = line_start;
        tok->cur = (char *)badchar;
        _PyTokenizer_syntaxerror_known_range(tok,
                col_offset + 1, col_offset + 1,
                "Non-UTF-8 code starting with '\\x%.2x'"
                "%s%V on line %i, "
                "but no encoding declared; "
                "see https://peps.python.org/pep-0263/ for details",
                (unsigned char)*badchar,
                tok->filename ? " in file " : "", tok->filename, "",
                lineno);
        return 0;
    }
    return 1;
}


/* ############## DEBUGGING STUFF ############## */

#ifdef Py_DEBUG
void
_PyTokenizer_print_escape(FILE *f, const char *s, Py_ssize_t size)
{
    if (s == NULL) {
        fputs("NULL", f);
        return;
    }
    putc('"', f);
    while (size-- > 0) {
        unsigned char c = *s++;
        switch (c) {
            case '\n': fputs("\\n", f); break;
            case '\r': fputs("\\r", f); break;
            case '\t': fputs("\\t", f); break;
            case '\f': fputs("\\f", f); break;
            case '\'': fputs("\\'", f); break;
            case '"': fputs("\\\"", f); break;
            default:
                if (0x20 <= c && c <= 0x7f)
                    putc(c, f);
                else
                    fprintf(f, "\\x%02x", c);
        }
    }
    putc('"', f);
}

void
_PyTokenizer_tok_dump(int type, char *start, char *end)
{
    fprintf(stderr, "%s", _PyParser_TokenNames[type]);
    if (type == NAME || type == NUMBER || type == STRING || type == OP)
        fprintf(stderr, "(%.*s)", (int)(end - start), start);
}
#endif

Coverage Report

Created: 2026-09-01 06:32

Line	Count	Source
1		#include "Python.h"
2		#include "errcode.h"
3		#include "pycore_runtime.h" // _Py_ID()
4		#include "pycore_token.h"
5		#include "pycore_tuple.h" // _PyTuple_FromPair
6
7		#include "../lexer/state.h"
8
9
10		/* ############## ERRORS ############## */
11
12		static int
13		_syntaxerror_range(struct tok_state tok, const char format,
14		int col_offset, int end_col_offset,
15		va_list vargs)
16	3.27k	{
17		// In release builds, we don't want to overwrite a previous error, but in debug builds we
18		// want to fail if we are not doing it so we can fix it.
19	3.27k	assert(tok->done != E_ERROR);
20	3.27k	if (tok->done == E_ERROR) {
21	0	return ERRORTOKEN;
22	0	}
23	3.27k	PyObject errmsg, errtext, *args;
24	3.27k	errmsg = PyUnicode_FromFormatV(format, vargs);
25	3.27k	if (!errmsg) {
26	0	goto error;
27	0	}
28
29	3.27k	errtext = PyUnicode_DecodeUTF8(tok->line_start, tok->cur - tok->line_start,
30	3.27k	"replace");
31	3.27k	if (!errtext) {
32	0	goto error;
33	0	}
34
35	3.27k	if (col_offset == -1) {
36	2.93k	col_offset = (int)PyUnicode_GET_LENGTH(errtext);
37	2.93k	}
38	3.27k	if (end_col_offset == -1) {
39	2.93k	end_col_offset = col_offset;
40	2.93k	}
41
42	3.27k	Py_ssize_t line_len = strcspn(tok->line_start, "\n");
43	3.27k	if (line_len != tok->cur - tok->line_start) {
44	2.70k	Py_DECREF(errtext);
45	2.70k	errtext = PyUnicode_DecodeUTF8(tok->line_start, line_len,
46	2.70k	"replace");
47	2.70k	}
48	3.27k	if (!errtext) {
49	0	goto error;
50	0	}
51
52	3.27k	args = Py_BuildValue("(O(OiiNii))", errmsg,
53	3.27k	tok->filename ? tok->filename : Py_None,
54	3.27k	tok->lineno, col_offset, errtext,
55	3.27k	tok->lineno, end_col_offset);
56	3.27k	if (args) {
57	3.27k	PyErr_SetObject(PyExc_SyntaxError, args);
58	3.27k	Py_DECREF(args);
59	3.27k	}
60
61	3.27k	error:
62	3.27k	Py_XDECREF(errmsg);
63	3.27k	tok->done = E_ERROR;
64	3.27k	return ERRORTOKEN;
65	3.27k	}
66
67		int
68		_PyTokenizer_syntaxerror(struct tok_state tok, const char format, ...)
69	2.93k	{
70		// These errors are cleaned on startup. Todo: Fix it.
71	2.93k	va_list vargs;
72	2.93k	va_start(vargs, format);
73	2.93k	int ret = _syntaxerror_range(tok, format, -1, -1, vargs);
74	2.93k	va_end(vargs);
75	2.93k	return ret;
76	2.93k	}
77
78		int
79		_PyTokenizer_syntaxerror_known_range(struct tok_state *tok,
80		int col_offset, int end_col_offset,
81		const char *format, ...)
82	338	{
83	338	va_list vargs;
84	338	va_start(vargs, format);
85	338	int ret = _syntaxerror_range(tok, format, col_offset, end_col_offset, vargs);
86	338	va_end(vargs);
87	338	return ret;
88	338	}
89
90		int
91		_PyTokenizer_indenterror(struct tok_state *tok)
92	5	{
93	5	tok->done = E_TABSPACE;
94	5	tok->cur = tok->inp;
95	5	return ERRORTOKEN;
96	5	}
97
98		int
99		_PyTokenizer_warn_invalid_escape_sequence(struct tok_state *tok, int first_invalid_escape_char)
100	3.95k	{
101	3.95k	if (!tok->report_warnings) {
102	0	return 0;
103	0	}
104
105	3.95k	PyObject *msg = PyUnicode_FromFormat(
106	3.95k	"\"\\%c\" is an invalid escape sequence. "
107	3.95k	"Such sequences will not work in the future. "
108	3.95k	"Did you mean \"\\\\%c\"? A raw string is also an option.",
109	3.95k	(char) first_invalid_escape_char,
110	3.95k	(char) first_invalid_escape_char
111	3.95k	);
112
113	3.95k	if (msg == NULL) {
114	0	return -1;
115	0	}
116
117	3.95k	if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg, tok->filename,
118	3.95k	tok->lineno, tok->module, NULL) < 0) {
119	0	Py_DECREF(msg);
120
121	0	if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) {
122		/* Replace the SyntaxWarning exception with a SyntaxError
123		to get a more accurate error report */
124	0	PyErr_Clear();
125
126	0	return _PyTokenizer_syntaxerror(tok,
127	0	"\"\\%c\" is an invalid escape sequence. "
128	0	"Did you mean \"\\\\%c\"? A raw string is also an option.",
129	0	(char) first_invalid_escape_char,
130	0	(char) first_invalid_escape_char);
131	0	}
132
133	0	return -1;
134	0	}
135
136	3.95k	Py_DECREF(msg);
137	3.95k	return 0;
138	3.95k	}
139
140		void
141		_PyTokenizer_raise_init_error(PyObject *filename)
142	1.90k	{
143	1.90k	if (!(PyErr_ExceptionMatches(PyExc_LookupError)
144	1.67k	\|\| PyErr_ExceptionMatches(PyExc_SyntaxError)
145	1.43k	\|\| PyErr_ExceptionMatches(PyExc_ValueError)
146	44	\|\| PyErr_ExceptionMatches(PyExc_UnicodeDecodeError))) {
147	44	return;
148	44	}
149	1.86k	PyObject *errstr = NULL;
150	1.86k	PyObject *tuple = NULL;
151	1.86k	PyObject *type;
152	1.86k	PyObject *value;
153	1.86k	PyObject *tback;
154	1.86k	PyErr_Fetch(&type, &value, &tback);
155	1.86k	if (PyErr_GivenExceptionMatches(value, PyExc_SyntaxError)) {
156	240	if (PyObject_SetAttr(value, &_Py_ID(filename), filename)) {
157	0	goto error;
158	0	}
159	240	PyErr_Restore(type, value, tback);
160	240	return;
161	240	}
162	1.62k	errstr = PyObject_Str(value);
163	1.62k	if (!errstr) {
164	0	goto error;
165	0	}
166
167	1.62k	PyObject *tmp = Py_BuildValue("(OiiO)", filename, 0, -1, Py_None);
168	1.62k	if (!tmp) {
169	0	goto error;
170	0	}
171
172	1.62k	tuple = _PyTuple_FromPair(errstr, tmp);
173	1.62k	Py_DECREF(tmp);
174	1.62k	if (!tuple) {
175	0	goto error;
176	0	}
177	1.62k	PyErr_SetObject(PyExc_SyntaxError, tuple);
178
179	1.62k	error:
180	1.62k	Py_XDECREF(type);
181	1.62k	Py_XDECREF(value);
182	1.62k	Py_XDECREF(tback);
183	1.62k	Py_XDECREF(errstr);
184	1.62k	Py_XDECREF(tuple);
185	1.62k	}
186
187		int
188		_PyTokenizer_parser_warn(struct tok_state tok, PyObject category, const char *format, ...)
189	31.7k	{
190	31.7k	if (!tok->report_warnings) {
191	0	return 0;
192	0	}
193
194	31.7k	PyObject *errmsg;
195	31.7k	va_list vargs;
196	31.7k	va_start(vargs, format);
197	31.7k	errmsg = PyUnicode_FromFormatV(format, vargs);
198	31.7k	va_end(vargs);
199	31.7k	if (!errmsg) {
200	0	goto error;
201	0	}
202
203	31.7k	if (PyErr_WarnExplicitObject(category, errmsg, tok->filename,
204	31.7k	tok->lineno, tok->module, NULL) < 0) {
205	0	if (PyErr_ExceptionMatches(category)) {
206		/* Replace the DeprecationWarning exception with a SyntaxError
207		to get a more accurate error report */
208	0	PyErr_Clear();
209	0	_PyTokenizer_syntaxerror(tok, "%U", errmsg);
210	0	}
211	0	goto error;
212	0	}
213	31.7k	Py_DECREF(errmsg);
214	31.7k	return 0;
215
216	0	error:
217	0	Py_XDECREF(errmsg);
218	0	tok->done = E_ERROR;
219	0	return -1;
220	31.7k	}
221
222
223		/* Check whether the characters at s start a valid
224		UTF-8 sequence. Return the number of characters forming
225		the sequence if yes, 0 if not. The special cases match
226		those in stringlib/codecs.h:utf8_decode.
227		*/
228		static int
229		valid_utf8(const unsigned char* s)
230	5.48M	{
231	5.48M	int expected = 0;
232	5.48M	int length;
233	5.48M	if (*s < 0x80) {
234		/* single-byte code */
235	5.46M	return 1;
236	5.46M	}
237	12.7k	else if (*s < 0xE0) {
238		/* \xC2\x80-\xDF\xBF -- 0080-07FF */
239	8.90k	if (*s < 0xC2) {
240		/* invalid sequence
241		\x80-\xBF -- continuation byte
242		\xC0-\xC1 -- fake 0000-007F */
243	95	return 0;
244	95	}
245	8.81k	expected = 1;
246	8.81k	}
247	3.81k	else if (*s < 0xF0) {
248		/* \xE0\xA0\x80-\xEF\xBF\xBF -- 0800-FFFF */
249	1.98k	if (s == 0xE0 && (s + 1) < 0xA0) {
250		/* invalid sequence
251		\xE0\x80\x80-\xE0\x9F\xBF -- fake 0000-0800 */
252	9	return 0;
253	9	}
254	1.97k	else if (s == 0xED && (s + 1) >= 0xA0) {
255		/* Decoding UTF-8 sequences in range \xED\xA0\x80-\xED\xBF\xBF
256		will result in surrogates in range D800-DFFF. Surrogates are
257		not valid UTF-8 so they are rejected.
258		See https://www.unicode.org/versions/Unicode5.2.0/ch03.pdf
259		(table 3-7) and http://www.rfc-editor.org/rfc/rfc3629.txt */
260	8	return 0;
261	8	}
262	1.96k	expected = 2;
263	1.96k	}
264	1.83k	else if (*s < 0xF5) {
265		/* \xF0\x90\x80\x80-\xF4\x8F\xBF\xBF -- 10000-10FFFF */
266	1.82k	if ((s + 1) < 0x90 ? s == 0xF0 : *s == 0xF4) {
267		/* invalid sequence -- one of:
268		\xF0\x80\x80\x80-\xF0\x8F\xBF\xBF -- fake 0000-FFFF
269		\xF4\x90\x80\x80- -- 110000- overflow */
270	13	return 0;
271	13	}
272	1.81k	expected = 3;
273	1.81k	}
274	13	else {
275		/* invalid start byte */
276	13	return 0;
277	13	}
278	12.5k	length = expected + 1;
279	30.5k	for (int i = 1; i <= expected; i++) {
280	18.0k	if (s[i] < 0x80 \|\| s[i] >= 0xC0) {
281	100	return 0;
282	100	}
283	18.0k	}
284	12.4k	return length;
285	12.5k	}
286
287		int
288		_PyTokenizer_ensure_utf8(const char line, struct tok_state tok, int lineno)
289	8.70k	{
290	8.70k	const char *badchar = NULL;
291	8.70k	const char *c;
292	8.70k	int length;
293	8.70k	int col_offset = 0;
294	8.70k	const char *line_start = line;
295	5.49M	for (c = line; *c; c += length) {
296	5.48M	if (!(length = valid_utf8((const unsigned char *)c))) {
297	238	badchar = c;
298	238	break;
299	238	}
300	5.48M	col_offset++;
301	5.48M	if (*c == '\n') {
302	158k	lineno++;
303	158k	col_offset = 0;
304	158k	line_start = c + 1;
305	158k	}
306	5.48M	}
307	8.70k	if (badchar) {
308	238	tok->lineno = lineno;
309	238	tok->line_start = line_start;
310	238	tok->cur = (char *)badchar;
311	238	_PyTokenizer_syntaxerror_known_range(tok,
312	238	col_offset + 1, col_offset + 1,
313	238	"Non-UTF-8 code starting with '\\x%.2x'"
314	238	"%s%V on line %i, "
315	238	"but no encoding declared; "
316	238	"see https://peps.python.org/pep-0263/ for details",
317	238	(unsigned char)*badchar,
318	238	tok->filename ? " in file " : "", tok->filename, "",
319	238	lineno);
320	238	return 0;
321	238	}
322	8.46k	return 1;
323	8.70k	}
324
325
326		/* ############## DEBUGGING STUFF ############## */
327
328		#ifdef Py_DEBUG
329		void
330		_PyTokenizer_print_escape(FILE f, const char s, Py_ssize_t size)
331		{
332		if (s == NULL) {
333		fputs("NULL", f);
334		return;
335		}
336		putc('"', f);
337		while (size-- > 0) {
338		unsigned char c = *s++;
339		switch (c) {
340		case '\n': fputs("\\n", f); break;
341		case '\r': fputs("\\r", f); break;
342		case '\t': fputs("\\t", f); break;
343		case '\f': fputs("\\f", f); break;
344		case '\'': fputs("\\'", f); break;
345		case '"': fputs("\\\"", f); break;
346		default:
347		if (0x20 <= c && c <= 0x7f)
348		putc(c, f);
349		else
350		fprintf(f, "\\x%02x", c);
351		}
352		}
353		putc('"', f);
354		}
355
356		void
357		_PyTokenizer_tok_dump(int type, char start, char end)
358		{
359		fprintf(stderr, "%s", _PyParser_TokenNames[type]);
360		if (type == NAME \|\| type == NUMBER \|\| type == STRING \|\| type == OP)
361		fprintf(stderr, "(%.*s)", (int)(end - start), start);
362		}
363		#endif