You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
204 lines
6.0 KiB
204 lines
6.0 KiB
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2013, 2014 Damien P. George
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#ifndef MICROPY_INCLUDED_PY_LEXER_H
|
|
#define MICROPY_INCLUDED_PY_LEXER_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "py/mpconfig.h"
|
|
#include "py/qstr.h"
|
|
#include "py/reader.h"
|
|
|
|
/* lexer.h -- simple tokeniser for MicroPython
|
|
*
|
|
* Uses (byte) length instead of null termination.
|
|
* Tokens are the same - UTF-8 with (byte) length.
|
|
*/
|
|
|
|
typedef enum _mp_token_kind_t {
|
|
MP_TOKEN_END,
|
|
|
|
MP_TOKEN_INVALID,
|
|
MP_TOKEN_DEDENT_MISMATCH,
|
|
MP_TOKEN_LONELY_STRING_OPEN,
|
|
#if MICROPY_PY_FSTRINGS
|
|
MP_TOKEN_MALFORMED_FSTRING,
|
|
#endif
|
|
|
|
MP_TOKEN_NEWLINE,
|
|
MP_TOKEN_INDENT,
|
|
MP_TOKEN_DEDENT,
|
|
|
|
MP_TOKEN_NAME,
|
|
MP_TOKEN_INTEGER,
|
|
MP_TOKEN_FLOAT_OR_IMAG,
|
|
MP_TOKEN_STRING,
|
|
MP_TOKEN_BYTES,
|
|
|
|
MP_TOKEN_ELLIPSIS,
|
|
|
|
MP_TOKEN_KW_FALSE,
|
|
MP_TOKEN_KW_NONE,
|
|
MP_TOKEN_KW_TRUE,
|
|
MP_TOKEN_KW___DEBUG__,
|
|
MP_TOKEN_KW_AND,
|
|
MP_TOKEN_KW_AS,
|
|
MP_TOKEN_KW_ASSERT,
|
|
#if MICROPY_PY_ASYNC_AWAIT
|
|
MP_TOKEN_KW_ASYNC,
|
|
MP_TOKEN_KW_AWAIT,
|
|
#endif
|
|
MP_TOKEN_KW_BREAK,
|
|
MP_TOKEN_KW_CLASS,
|
|
MP_TOKEN_KW_CONTINUE,
|
|
MP_TOKEN_KW_DEF,
|
|
MP_TOKEN_KW_DEL,
|
|
MP_TOKEN_KW_ELIF,
|
|
MP_TOKEN_KW_ELSE,
|
|
MP_TOKEN_KW_EXCEPT,
|
|
MP_TOKEN_KW_FINALLY,
|
|
MP_TOKEN_KW_FOR,
|
|
MP_TOKEN_KW_FROM,
|
|
MP_TOKEN_KW_GLOBAL,
|
|
MP_TOKEN_KW_IF,
|
|
MP_TOKEN_KW_IMPORT,
|
|
MP_TOKEN_KW_IN,
|
|
MP_TOKEN_KW_IS,
|
|
MP_TOKEN_KW_LAMBDA,
|
|
MP_TOKEN_KW_NONLOCAL,
|
|
MP_TOKEN_KW_NOT,
|
|
MP_TOKEN_KW_OR,
|
|
MP_TOKEN_KW_PASS,
|
|
MP_TOKEN_KW_RAISE,
|
|
MP_TOKEN_KW_RETURN,
|
|
MP_TOKEN_KW_TRY,
|
|
MP_TOKEN_KW_WHILE,
|
|
MP_TOKEN_KW_WITH,
|
|
MP_TOKEN_KW_YIELD,
|
|
|
|
MP_TOKEN_OP_ASSIGN,
|
|
MP_TOKEN_OP_TILDE,
|
|
|
|
// Order of these 6 matches corresponding mp_binary_op_t operator
|
|
MP_TOKEN_OP_LESS,
|
|
MP_TOKEN_OP_MORE,
|
|
MP_TOKEN_OP_DBL_EQUAL,
|
|
MP_TOKEN_OP_LESS_EQUAL,
|
|
MP_TOKEN_OP_MORE_EQUAL,
|
|
MP_TOKEN_OP_NOT_EQUAL,
|
|
|
|
// Order of these 13 matches corresponding mp_binary_op_t operator
|
|
MP_TOKEN_OP_PIPE,
|
|
MP_TOKEN_OP_CARET,
|
|
MP_TOKEN_OP_AMPERSAND,
|
|
MP_TOKEN_OP_DBL_LESS,
|
|
MP_TOKEN_OP_DBL_MORE,
|
|
MP_TOKEN_OP_PLUS,
|
|
MP_TOKEN_OP_MINUS,
|
|
MP_TOKEN_OP_STAR,
|
|
MP_TOKEN_OP_AT,
|
|
MP_TOKEN_OP_DBL_SLASH,
|
|
MP_TOKEN_OP_SLASH,
|
|
MP_TOKEN_OP_PERCENT,
|
|
MP_TOKEN_OP_DBL_STAR,
|
|
|
|
// Order of these 13 matches corresponding mp_binary_op_t operator
|
|
MP_TOKEN_DEL_PIPE_EQUAL,
|
|
MP_TOKEN_DEL_CARET_EQUAL,
|
|
MP_TOKEN_DEL_AMPERSAND_EQUAL,
|
|
MP_TOKEN_DEL_DBL_LESS_EQUAL,
|
|
MP_TOKEN_DEL_DBL_MORE_EQUAL,
|
|
MP_TOKEN_DEL_PLUS_EQUAL,
|
|
MP_TOKEN_DEL_MINUS_EQUAL,
|
|
MP_TOKEN_DEL_STAR_EQUAL,
|
|
MP_TOKEN_DEL_AT_EQUAL,
|
|
MP_TOKEN_DEL_DBL_SLASH_EQUAL,
|
|
MP_TOKEN_DEL_SLASH_EQUAL,
|
|
MP_TOKEN_DEL_PERCENT_EQUAL,
|
|
MP_TOKEN_DEL_DBL_STAR_EQUAL,
|
|
|
|
MP_TOKEN_DEL_PAREN_OPEN,
|
|
MP_TOKEN_DEL_PAREN_CLOSE,
|
|
MP_TOKEN_DEL_BRACKET_OPEN,
|
|
MP_TOKEN_DEL_BRACKET_CLOSE,
|
|
MP_TOKEN_DEL_BRACE_OPEN,
|
|
MP_TOKEN_DEL_BRACE_CLOSE,
|
|
MP_TOKEN_DEL_COMMA,
|
|
MP_TOKEN_DEL_COLON,
|
|
MP_TOKEN_DEL_PERIOD,
|
|
MP_TOKEN_DEL_SEMICOLON,
|
|
MP_TOKEN_DEL_EQUAL,
|
|
MP_TOKEN_DEL_MINUS_MORE,
|
|
|
|
MP_TOKEN_NUMBER_OF,
|
|
} mp_token_kind_t;
|
|
|
|
// this data structure is exposed for efficiency
|
|
// public members are: source_name, tok_line, tok_column, tok_kind, vstr
|
|
typedef struct _mp_lexer_t {
|
|
qstr source_name; // name of source
|
|
mp_reader_t reader; // stream source
|
|
|
|
unichar chr0, chr1, chr2; // current cached characters from source
|
|
#if MICROPY_PY_FSTRINGS
|
|
unichar chr0_saved, chr1_saved, chr2_saved; // current cached characters from alt source
|
|
#endif
|
|
|
|
size_t line; // current source line
|
|
size_t column; // current source column
|
|
|
|
mp_int_t emit_dent; // non-zero when there are INDENT/DEDENT tokens to emit
|
|
mp_int_t nested_bracket_level; // >0 when there are nested brackets over multiple lines
|
|
|
|
size_t alloc_indent_level;
|
|
size_t num_indent_level;
|
|
uint16_t *indent_level;
|
|
|
|
size_t tok_line; // token source line
|
|
size_t tok_column; // token source column
|
|
mp_token_kind_t tok_kind; // token kind
|
|
vstr_t vstr; // token data
|
|
#if MICROPY_PY_FSTRINGS
|
|
vstr_t fstring_args; // extracted arguments to pass to .format()
|
|
size_t fstring_args_idx; // how many bytes of fstring_args have been read
|
|
#endif
|
|
} mp_lexer_t;
|
|
|
|
mp_lexer_t *mp_lexer_new(qstr src_name, mp_reader_t reader);
|
|
mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, size_t len, size_t free_len);
|
|
|
|
// If MICROPY_READER_POSIX or MICROPY_READER_VFS aren't enabled then
|
|
// this function must be implemented by the port.
|
|
mp_lexer_t *mp_lexer_new_from_file(qstr filename);
|
|
|
|
#if MICROPY_HELPER_LEXER_UNIX
|
|
mp_lexer_t *mp_lexer_new_from_fd(qstr filename, int fd, bool close_fd);
|
|
#endif
|
|
|
|
void mp_lexer_free(mp_lexer_t *lex);
|
|
void mp_lexer_to_next(mp_lexer_t *lex);
|
|
|
|
#endif // MICROPY_INCLUDED_PY_LEXER_H
|
|
|