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.
107 lines
4.5 KiB
107 lines
4.5 KiB
/*
|
|
* This file is part of the Micro Python 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_PARSE_H__
|
|
#define __MICROPY_INCLUDED_PY_PARSE_H__
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
#include "py/obj.h"
|
|
|
|
struct _mp_lexer_t;
|
|
|
|
// a mp_parse_node_t is:
|
|
// - 0000...0000: no node
|
|
// - xxxx...xxx1: a small integer; bits 1 and above are the signed value, 2's complement
|
|
// - xxxx...xx00: pointer to mp_parse_node_struct_t
|
|
// - xx...xx0010: an identifier; bits 4 and above are the qstr
|
|
// - xx...xx0110: a string; bits 4 and above are the qstr holding the value
|
|
// - xx...xx1010: a string of bytes; bits 4 and above are the qstr holding the value
|
|
// - xx...xx1110: a token; bits 4 and above are mp_token_kind_t
|
|
|
|
#define MP_PARSE_NODE_NULL (0)
|
|
#define MP_PARSE_NODE_SMALL_INT (0x1)
|
|
#define MP_PARSE_NODE_ID (0x02)
|
|
#define MP_PARSE_NODE_STRING (0x06)
|
|
#define MP_PARSE_NODE_BYTES (0x0a)
|
|
#define MP_PARSE_NODE_TOKEN (0x0e)
|
|
|
|
typedef uintptr_t mp_parse_node_t; // must be pointer size
|
|
|
|
typedef struct _mp_parse_node_struct_t {
|
|
uint32_t source_line; // line number in source file
|
|
uint32_t kind_num_nodes; // parse node kind, and number of nodes
|
|
mp_parse_node_t nodes[]; // nodes
|
|
} mp_parse_node_struct_t;
|
|
|
|
// macros for mp_parse_node_t usage
|
|
// some of these evaluate their argument more than once
|
|
|
|
#define MP_PARSE_NODE_IS_NULL(pn) ((pn) == MP_PARSE_NODE_NULL)
|
|
#define MP_PARSE_NODE_IS_LEAF(pn) ((pn) & 3)
|
|
#define MP_PARSE_NODE_IS_STRUCT(pn) ((pn) != MP_PARSE_NODE_NULL && ((pn) & 3) == 0)
|
|
#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))
|
|
|
|
#define MP_PARSE_NODE_IS_SMALL_INT(pn) (((pn) & 0x1) == MP_PARSE_NODE_SMALL_INT)
|
|
#define MP_PARSE_NODE_IS_ID(pn) (((pn) & 0x0f) == MP_PARSE_NODE_ID)
|
|
#define MP_PARSE_NODE_IS_TOKEN(pn) (((pn) & 0x0f) == MP_PARSE_NODE_TOKEN)
|
|
#define MP_PARSE_NODE_IS_TOKEN_KIND(pn, k) ((pn) == (MP_PARSE_NODE_TOKEN | ((k) << 4)))
|
|
|
|
#define MP_PARSE_NODE_LEAF_KIND(pn) ((pn) & 0x0f)
|
|
#define MP_PARSE_NODE_LEAF_ARG(pn) (((uintptr_t)(pn)) >> 4)
|
|
#define MP_PARSE_NODE_LEAF_SMALL_INT(pn) (((mp_int_t)(intptr_t)(pn)) >> 1)
|
|
#define MP_PARSE_NODE_STRUCT_KIND(pns) ((pns)->kind_num_nodes & 0xff)
|
|
#define MP_PARSE_NODE_STRUCT_NUM_NODES(pns) ((pns)->kind_num_nodes >> 8)
|
|
|
|
static inline mp_parse_node_t mp_parse_node_new_small_int(mp_int_t val) {
|
|
return (mp_parse_node_t)(MP_PARSE_NODE_SMALL_INT | ((mp_uint_t)val << 1));
|
|
}
|
|
static inline mp_parse_node_t mp_parse_node_new_leaf(size_t kind, mp_int_t arg) {
|
|
return (mp_parse_node_t)(kind | ((mp_uint_t)arg << 4));
|
|
}
|
|
bool mp_parse_node_is_const_false(mp_parse_node_t pn);
|
|
bool mp_parse_node_is_const_true(mp_parse_node_t pn);
|
|
bool mp_parse_node_get_int_maybe(mp_parse_node_t pn, mp_obj_t *o);
|
|
int mp_parse_node_extract_list(mp_parse_node_t *pn, size_t pn_kind, mp_parse_node_t **nodes);
|
|
void mp_parse_node_print(mp_parse_node_t pn, size_t indent);
|
|
|
|
typedef enum {
|
|
MP_PARSE_SINGLE_INPUT,
|
|
MP_PARSE_FILE_INPUT,
|
|
MP_PARSE_EVAL_INPUT,
|
|
} mp_parse_input_kind_t;
|
|
|
|
typedef struct _mp_parse_t {
|
|
mp_parse_node_t root;
|
|
struct _mp_parse_chunk_t *chunk;
|
|
} mp_parse_tree_t;
|
|
|
|
// the parser will raise an exception if an error occurred
|
|
// the parser will free the lexer before it returns
|
|
mp_parse_tree_t mp_parse(struct _mp_lexer_t *lex, mp_parse_input_kind_t input_kind);
|
|
void mp_parse_tree_clear(mp_parse_tree_t *tree);
|
|
|
|
#endif // __MICROPY_INCLUDED_PY_PARSE_H__
|
|
|