04b9147e15
Blanket wide to all .c and .h files. Some files originating from ST are difficult to deal with (license wise) so it was left out of those. Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
104 lines
4.8 KiB
C
104 lines
4.8 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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struct _mp_lexer_t;
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// a mp_parse_node_t is:
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// - 0000...0000: no node
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// - xxxx...xxx1: a small integer; bits 1 and above are the signed value, 2's complement
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// - xxxx...xx00: pointer to mp_parse_node_struct_t
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// - xx...x00010: an identifier; bits 5 and above are the qstr
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// - xx...x00110: an integer; bits 5 and above are the qstr holding the value
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// - xx...x01010: a decimal; bits 5 and above are the qstr holding the value
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// - xx...x01110: a string; bits 5 and above are the qstr holding the value
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// - xx...x10010: a string of bytes; bits 5 and above are the qstr holding the value
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// - xx...x10110: a token; bits 5 and above are mp_token_kind_t
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// TODO: these can now be unified with MP_OBJ_FITS_SMALL_INT(x)
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// makes sure the top 2 bits of x are all cleared (positive number) or all set (negavite number)
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// these macros can probably go somewhere else because they are used more than just in the parser
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#define MP_UINT_HIGH_2_BITS (~((~((machine_uint_t)0)) >> 2))
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// parser's small ints are different from VM small int
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#define MP_PARSE_FITS_SMALL_INT(x) (((((machine_uint_t)(x)) & MP_UINT_HIGH_2_BITS) == 0) || ((((machine_uint_t)(x)) & MP_UINT_HIGH_2_BITS) == MP_UINT_HIGH_2_BITS))
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#define MP_PARSE_NODE_NULL (0)
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#define MP_PARSE_NODE_SMALL_INT (0x1)
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#define MP_PARSE_NODE_ID (0x02)
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#define MP_PARSE_NODE_INTEGER (0x06)
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#define MP_PARSE_NODE_DECIMAL (0x0a)
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#define MP_PARSE_NODE_STRING (0x0e)
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#define MP_PARSE_NODE_BYTES (0x12)
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#define MP_PARSE_NODE_TOKEN (0x16)
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typedef machine_uint_t mp_parse_node_t; // must be pointer size
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typedef struct _mp_parse_node_struct_t {
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uint32_t source_line; // line number in source file
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uint32_t kind_num_nodes; // parse node kind, and number of nodes
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mp_parse_node_t nodes[]; // nodes
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} mp_parse_node_struct_t;
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// macros for mp_parse_node_t usage
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// some of these evaluate their argument more than once
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#define MP_PARSE_NODE_IS_NULL(pn) ((pn) == MP_PARSE_NODE_NULL)
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#define MP_PARSE_NODE_IS_LEAF(pn) ((pn) & 3)
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#define MP_PARSE_NODE_IS_STRUCT(pn) ((pn) != MP_PARSE_NODE_NULL && ((pn) & 3) == 0)
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#define MP_PARSE_NODE_IS_STRUCT_KIND(pn, k) ((pn) != MP_PARSE_NODE_NULL && ((pn) & 3) == 0 && MP_PARSE_NODE_STRUCT_KIND((mp_parse_node_struct_t*)(pn)) == (k))
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#define MP_PARSE_NODE_IS_SMALL_INT(pn) (((pn) & 0x1) == MP_PARSE_NODE_SMALL_INT)
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#define MP_PARSE_NODE_IS_ID(pn) (((pn) & 0x1f) == MP_PARSE_NODE_ID)
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#define MP_PARSE_NODE_IS_TOKEN(pn) (((pn) & 0x1f) == MP_PARSE_NODE_TOKEN)
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#define MP_PARSE_NODE_IS_TOKEN_KIND(pn, k) ((pn) == (MP_PARSE_NODE_TOKEN | ((k) << 5)))
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#define MP_PARSE_NODE_LEAF_KIND(pn) ((pn) & 0x1f)
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// TODO should probably have int and uint versions of this macro
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#define MP_PARSE_NODE_LEAF_ARG(pn) (((machine_uint_t)(pn)) >> 5)
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#define MP_PARSE_NODE_LEAF_SMALL_INT(pn) (((machine_int_t)(pn)) >> 1)
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#define MP_PARSE_NODE_STRUCT_KIND(pns) ((pns)->kind_num_nodes & 0xff)
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#define MP_PARSE_NODE_STRUCT_NUM_NODES(pns) ((pns)->kind_num_nodes >> 8)
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mp_parse_node_t mp_parse_node_new_leaf(machine_int_t kind, machine_int_t arg);
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uint mp_parse_node_free(mp_parse_node_t pn);
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void mp_parse_node_print(mp_parse_node_t pn, int indent);
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typedef enum {
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MP_PARSE_SINGLE_INPUT,
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MP_PARSE_FILE_INPUT,
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MP_PARSE_EVAL_INPUT,
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} mp_parse_input_kind_t;
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typedef enum {
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MP_PARSE_ERROR_MEMORY,
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MP_PARSE_ERROR_UNEXPECTED_INDENT,
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MP_PARSE_ERROR_UNMATCHED_UNINDENT,
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MP_PARSE_ERROR_INVALID_SYNTAX,
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} mp_parse_error_kind_t;
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// returns MP_PARSE_NODE_NULL on error, and then parse_error_kind_out is valid
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mp_parse_node_t mp_parse(struct _mp_lexer_t *lex, mp_parse_input_kind_t input_kind, mp_parse_error_kind_t *parse_error_kind_out);
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