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When there're C files to be (re)compiled, they're all passed first to preprocessor. QSTR references are extracted from preprocessed output and split per original C file. Then all available qstr files (including those generated previously) are catenated together. Only if the resulting content has changed, the output file is written (causing almost global rebuild to pick up potentially renumbered qstr's). Otherwise, it's not updated to not cause spurious rebuilds. Related make rules are split to minimize amount of commands executed in the interim case (when some C files were updated, but no qstrs were changed).
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef __MICROPY_INCLUDED_PY_QSTR_H__
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#define __MICROPY_INCLUDED_PY_QSTR_H__
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#include "py/mpconfig.h"
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#include "py/misc.h"
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// See qstrdefs.h for a list of qstr's that are available as constants.
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// Reference them as MP_QSTR_xxxx.
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//
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// Note: it would be possible to define MP_QSTR_xxx as qstr_from_str_static("xxx")
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// for qstrs that are referenced this way, but you don't want to have them in ROM.
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// first entry in enum will be MP_QSTR_NULL=0, which indicates invalid/no qstr
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enum {
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#ifndef __QSTR_EXTRACT
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#define QDEF(id, str) id,
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#include "genhdr/qstrdefs.generated.h"
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#undef QDEF
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#endif
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MP_QSTRnumber_of, // no underscore so it can't clash with any of the above
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};
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typedef size_t qstr;
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typedef struct _qstr_pool_t {
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struct _qstr_pool_t *prev;
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size_t total_prev_len;
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size_t alloc;
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size_t len;
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const byte *qstrs[];
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} qstr_pool_t;
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#define QSTR_FROM_STR_STATIC(s) (qstr_from_strn((s), strlen(s)))
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void qstr_init(void);
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mp_uint_t qstr_compute_hash(const byte *data, size_t len);
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qstr qstr_find_strn(const char *str, size_t str_len); // returns MP_QSTR_NULL if not found
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qstr qstr_from_str(const char *str);
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qstr qstr_from_strn(const char *str, size_t len);
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byte *qstr_build_start(size_t len, byte **q_ptr);
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qstr qstr_build_end(byte *q_ptr);
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mp_uint_t qstr_hash(qstr q);
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const char *qstr_str(qstr q);
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size_t qstr_len(qstr q);
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const byte *qstr_data(qstr q, size_t *len);
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void qstr_pool_info(size_t *n_pool, size_t *n_qstr, size_t *n_str_data_bytes, size_t *n_total_bytes);
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void qstr_dump_data(void);
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#endif // __MICROPY_INCLUDED_PY_QSTR_H__
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