67 lines
2.3 KiB
C
67 lines
2.3 KiB
C
enum {
|
|
ID_INFO_KIND_GLOBAL_IMPLICIT,
|
|
ID_INFO_KIND_GLOBAL_EXPLICIT,
|
|
ID_INFO_KIND_LOCAL, // in a function f, written and only referenced by f
|
|
ID_INFO_KIND_CELL, // in a function f, read/written by children of f
|
|
ID_INFO_KIND_FREE, // in a function f, belongs to the parent of f
|
|
};
|
|
|
|
typedef struct _id_info_t {
|
|
// TODO compress this info to make structure smaller in memory
|
|
bool param;
|
|
int kind;
|
|
qstr qstr;
|
|
|
|
// when it's an ID_INFO_KIND_LOCAL this is the unique number of the local
|
|
// whet it's an ID_INFO_KIND_CELL/FREE this is the unique number of the closed over variable
|
|
int local_num;
|
|
} id_info_t;
|
|
|
|
// taken from python source, Include/code.h
|
|
#define SCOPE_FLAG_OPTIMISED 0x0001
|
|
#define SCOPE_FLAG_NEWLOCALS 0x0002
|
|
#define SCOPE_FLAG_VARARGS 0x0004
|
|
#define SCOPE_FLAG_VARKEYWORDS 0x0008
|
|
#define SCOPE_FLAG_NESTED 0x0010
|
|
#define SCOPE_FLAG_GENERATOR 0x0020
|
|
/* The SCOPE_FLAG_NOFREE flag is set if there are no free or cell variables.
|
|
This information is redundant, but it allows a single flag test
|
|
to determine whether there is any extra work to be done when the
|
|
call frame is setup.
|
|
*/
|
|
#define SCOPE_FLAG_NOFREE 0x0040
|
|
|
|
// scope is a "block" in Python parlance
|
|
typedef enum { SCOPE_MODULE, SCOPE_FUNCTION, SCOPE_LAMBDA, SCOPE_LIST_COMP, SCOPE_DICT_COMP, SCOPE_SET_COMP, SCOPE_GEN_EXPR, SCOPE_CLASS } scope_kind_t;
|
|
typedef struct _scope_t {
|
|
scope_kind_t kind;
|
|
struct _scope_t *parent;
|
|
struct _scope_t *next;
|
|
py_parse_node_t pn;
|
|
qstr simple_name;
|
|
int id_info_alloc;
|
|
int id_info_len;
|
|
id_info_t *id_info;
|
|
int flags;
|
|
int num_params;
|
|
/* not needed
|
|
int num_default_params;
|
|
int num_dict_params;
|
|
*/
|
|
int num_locals;
|
|
int num_cells;
|
|
int stack_size;
|
|
uint unique_code_id;
|
|
uint emit_options;
|
|
} scope_t;
|
|
|
|
scope_t *scope_new(scope_kind_t kind, py_parse_node_t pn, uint unique_code_id, uint emit_options);
|
|
id_info_t *scope_find_or_add_id(scope_t *scope, qstr qstr, bool *added);
|
|
id_info_t *scope_find(scope_t *scope, qstr qstr);
|
|
id_info_t *scope_find_global(scope_t *scope, qstr qstr);
|
|
id_info_t *scope_find_local_in_parent(scope_t *scope, qstr qstr);
|
|
void scope_close_over_in_parents(scope_t *scope, qstr qstr);
|
|
void scope_declare_global(scope_t *scope, qstr qstr);
|
|
void scope_declare_nonlocal(scope_t *scope, qstr qstr);
|
|
void scope_print_info(scope_t *s);
|