99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* This file is part of the MicroPython 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_SCOPE_H
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#define MICROPY_INCLUDED_PY_SCOPE_H
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#include "py/parse.h"
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#include "py/emitglue.h"
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enum {
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ID_INFO_KIND_GLOBAL_IMPLICIT,
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ID_INFO_KIND_GLOBAL_EXPLICIT,
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ID_INFO_KIND_LOCAL, // in a function f, written and only referenced by f
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ID_INFO_KIND_CELL, // in a function f, read/written by children of f
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ID_INFO_KIND_FREE, // in a function f, belongs to the parent of f
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};
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enum {
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ID_FLAG_IS_PARAM = 0x01,
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ID_FLAG_IS_STAR_PARAM = 0x02,
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ID_FLAG_IS_DBL_STAR_PARAM = 0x04,
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ID_FLAG_VIPER_TYPE_POS = 4,
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};
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typedef struct _id_info_t {
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uint8_t kind;
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uint8_t flags;
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// when it's an ID_INFO_KIND_LOCAL this is the unique number of the local
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// whet it's an ID_INFO_KIND_CELL/FREE this is the unique number of the closed over variable
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uint16_t local_num;
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qstr qst;
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} id_info_t;
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#define SCOPE_IS_FUNC_LIKE(s) ((s) >= SCOPE_LAMBDA)
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// scope is a "block" in Python parlance
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typedef enum {
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SCOPE_MODULE,
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SCOPE_CLASS,
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SCOPE_LAMBDA,
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SCOPE_LIST_COMP,
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SCOPE_DICT_COMP,
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SCOPE_SET_COMP,
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SCOPE_GEN_EXPR,
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SCOPE_FUNCTION,
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} scope_kind_t;
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typedef struct _scope_t {
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scope_kind_t kind;
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struct _scope_t *parent;
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struct _scope_t *next;
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mp_parse_node_t pn;
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uint16_t source_file; // a qstr
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uint16_t simple_name; // a qstr
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mp_raw_code_t *raw_code;
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uint8_t scope_flags; // see runtime0.h
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uint8_t emit_options; // see emitglue.h
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uint16_t num_pos_args;
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uint16_t num_kwonly_args;
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uint16_t num_def_pos_args;
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uint16_t num_locals;
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uint16_t stack_size; // maximum size of the locals stack
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uint16_t exc_stack_size; // maximum size of the exception stack
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uint16_t id_info_alloc;
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uint16_t id_info_len;
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id_info_t *id_info;
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} scope_t;
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scope_t *scope_new(scope_kind_t kind, mp_parse_node_t pn, qstr source_file, mp_uint_t emit_options);
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void scope_free(scope_t *scope);
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id_info_t *scope_find_or_add_id(scope_t *scope, qstr qstr, bool *added);
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id_info_t *scope_find(scope_t *scope, qstr qstr);
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id_info_t *scope_find_global(scope_t *scope, qstr qstr);
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void scope_find_local_and_close_over(scope_t *scope, id_info_t *id, qstr qst);
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#endif // MICROPY_INCLUDED_PY_SCOPE_H
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