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py: Rename MP_QSTR_NULL to MP_QSTRnull to avoid intern collisions. 

Fixes #5140.
This commit is contained in:
Josh Lloyd 2019-09-25 17:53:30 +12:00 committed by Damien George
parent b596638b9b
commit 7d58a197cf
16 changed files with 31 additions and 23 deletions
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4
ports/stm32/pin.c
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@ -214,14 +214,14 @@ STATIC void pin_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t
mp_print_str(print, qstr_str(mode_qst));
// pull mode
qstr pull_qst = MP_QSTR_NULL;
qstr pull_qst = MP_QSTRnull;
uint32_t pull = pin_get_pull(self);
if (pull == GPIO_PULLUP) {
pull_qst = MP_QSTR_PULL_UP;
} else if (pull == GPIO_PULLDOWN) {
pull_qst = MP_QSTR_PULL_DOWN;
}
if (pull_qst != MP_QSTR_NULL) {
if (pull_qst != MP_QSTRnull) {
mp_printf(print, ", pull=Pin.%q", pull_qst);
}

3
ports/unix/coverage-frzmpy/frzqstr.py Normal file
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@ -0,0 +1,3 @@
# Checks for regression on MP_QSTR_NULL
def returns_NULL():
return "NULL"

6
py/compile.c
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@ -1205,7 +1205,7 @@ STATIC void compile_import_from(compiler_t *comp, mp_parse_node_struct_t *pns) {
// do the import
qstr dummy_q;
do_import_name(comp, pn_import_source, &dummy_q);
EMIT_ARG(import, MP_QSTR_NULL, MP_EMIT_IMPORT_STAR);
EMIT_ARG(import, MP_QSTRnull, MP_EMIT_IMPORT_STAR);
} else {
EMIT_ARG(load_const_small_int, import_level);
@ -2823,7 +2823,7 @@ STATIC void compile_scope_func_lambda_param(compiler_t *comp, mp_parse_node_t pn
return;
}
qstr param_name = MP_QSTR_NULL;
qstr param_name = MP_QSTRnull;
uint param_flag = ID_FLAG_IS_PARAM;
mp_parse_node_struct_t *pns = NULL;
if (MP_PARSE_NODE_IS_ID(pn)) {
@ -2882,7 +2882,7 @@ STATIC void compile_scope_func_lambda_param(compiler_t *comp, mp_parse_node_t pn
}
}
if (param_name != MP_QSTR_NULL) {
if (param_name != MP_QSTRnull) {
id_info_t *id_info = scope_find_or_add_id(comp->scope_cur, param_name, ID_INFO_KIND_UNDECIDED);
if (id_info->kind != ID_INFO_KIND_UNDECIDED) {
compile_syntax_error(comp, pn, "argument name reused");

2
py/makeqstrdata.py
View File

@ -339,7 +339,7 @@ def print_qstr_data(qcfgs, qstrs):
print('')
# add NULL qstr with no hash or data
print('QDEF(MP_QSTR_NULL, (const byte*)"%s%s" "")' % ('\\x00' * cfg_bytes_hash, '\\x00' * cfg_bytes_len))
print('QDEF(MP_QSTRnull, (const byte*)"%s%s" "")' % ('\\x00' * cfg_bytes_hash, '\\x00' * cfg_bytes_len))
# go through each qstr and print it out
for order, ident, qstr in sorted(qstrs.values(), key=lambda x: x[0]):

4
py/moduerrno.c
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@ -104,7 +104,7 @@ qstr mp_errno_to_str(mp_obj_t errno_val) {
// We have the errorcode dict so can do a lookup using the hash map
mp_map_elem_t *elem = mp_map_lookup((mp_map_t*)&errorcode_dict.map, errno_val, MP_MAP_LOOKUP);
if (elem == NULL) {
return MP_QSTR_NULL;
return MP_QSTRnull;
} else {
return MP_OBJ_QSTR_VALUE(elem->value);
}
@ -115,7 +115,7 @@ qstr mp_errno_to_str(mp_obj_t errno_val) {
return MP_OBJ_QSTR_VALUE(mp_module_uerrno_globals_table[i].key);
}
}
return MP_QSTR_NULL;
return MP_QSTRnull;
#endif
}

2
py/obj.c
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@ -93,7 +93,7 @@ void mp_obj_print_exception(const mp_print_t *print, mp_obj_t exc) {
#endif
// the block name can be NULL if it's unknown
qstr block = values[i + 2];
if (block == MP_QSTR_NULL) {
if (block == MP_QSTRnull) {
mp_print_str(print, "\n");
} else {
mp_printf(print, ", in %q\n", block);

2
py/objexcept.c
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@ -121,7 +121,7 @@ void mp_obj_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kin
// try to provide a nice OSError error message
if (o->base.type == &mp_type_OSError && mp_obj_is_small_int(o->args->items[0])) {
qstr qst = mp_errno_to_str(o->args->items[0]);
if (qst != MP_QSTR_NULL) {
if (qst != MP_QSTRnull) {
mp_printf(print, "[Errno " INT_FMT "] %q", MP_OBJ_SMALL_INT_VALUE(o->args->items[0]), qst);
return;
}

6
py/objstr.c
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@ -169,7 +169,7 @@ mp_obj_t mp_obj_str_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_
// Check if a qstr with this data already exists
qstr q = qstr_find_strn((const char*)str_data, str_len);
if (q != MP_QSTR_NULL) {
if (q != MP_QSTRnull) {
return MP_OBJ_NEW_QSTR(q);
}
@ -2042,7 +2042,7 @@ mp_obj_t mp_obj_new_str_from_vstr(const mp_obj_type_t *type, vstr_t *vstr) {
// if not a bytes object, look if a qstr with this data already exists
if (type == &mp_type_str) {
qstr q = qstr_find_strn(vstr->buf, vstr->len);
if (q != MP_QSTR_NULL) {
if (q != MP_QSTRnull) {
vstr_clear(vstr);
vstr->alloc = 0;
return MP_OBJ_NEW_QSTR(q);
@ -2067,7 +2067,7 @@ mp_obj_t mp_obj_new_str_from_vstr(const mp_obj_type_t *type, vstr_t *vstr) {
mp_obj_t mp_obj_new_str(const char* data, size_t len) {
qstr q = qstr_find_strn(data, len);
if (q != MP_QSTR_NULL) {
if (q != MP_QSTRnull) {
// qstr with this data already exists
return MP_OBJ_NEW_QSTR(q);
} else {

2
py/objtype.c
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@ -460,7 +460,7 @@ STATIC mp_obj_t instance_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
}
// Binary-op enum values not listed here will have the default value of 0 in the
// table, corresponding to MP_QSTR_NULL, and are therefore unsupported (a lookup will
// table, corresponding to MP_QSTRnull, and are therefore unsupported (a lookup will
// fail). They can be added at the expense of code size for the qstr.
// Qstrs for special methods are guaranteed to have a small value, so we use byte
// type to represent them.

8
py/parse.c
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@ -502,7 +502,7 @@ STATIC void push_result_token(parser_t *parser, uint8_t rule_id) {
} else if (lex->tok_kind == MP_TOKEN_STRING || lex->tok_kind == MP_TOKEN_BYTES) {
// Don't automatically intern all strings/bytes. doc strings (which are usually large)
// will be discarded by the compiler, and so we shouldn't intern them.
qstr qst = MP_QSTR_NULL;
qstr qst = MP_QSTRnull;
if (lex->vstr.len <= MICROPY_ALLOC_PARSE_INTERN_STRING_LEN) {
// intern short strings
qst = qstr_from_strn(lex->vstr.buf, lex->vstr.len);
@ -510,7 +510,7 @@ STATIC void push_result_token(parser_t *parser, uint8_t rule_id) {
// check if this string is already interned
qst = qstr_find_strn(lex->vstr.buf, lex->vstr.len);
}
if (qst != MP_QSTR_NULL) {
if (qst != MP_QSTRnull) {
// qstr exists, make a leaf node
pn = mp_parse_node_new_leaf(lex->tok_kind == MP_TOKEN_STRING ? MP_PARSE_NODE_STRING : MP_PARSE_NODE_BYTES, qst);
} else {
@ -705,7 +705,7 @@ STATIC bool fold_constants(parser_t *parser, uint8_t rule_id, size_t num_args) {
mp_obj_t exc = mp_obj_new_exception_msg(&mp_type_SyntaxError,
"constant must be an integer");
mp_obj_exception_add_traceback(exc, parser->lexer->source_name,
((mp_parse_node_struct_t*)pn1)->source_line, MP_QSTR_NULL);
((mp_parse_node_struct_t*)pn1)->source_line, MP_QSTRnull);
nlr_raise(exc);
}
@ -1138,7 +1138,7 @@ mp_parse_tree_t mp_parse(mp_lexer_t *lex, mp_parse_input_kind_t input_kind) {
}
// add traceback to give info about file name and location
// we don't have a 'block' name, so just pass the NULL qstr to indicate this
mp_obj_exception_add_traceback(exc, lex->source_name, lex->tok_line, MP_QSTR_NULL);
mp_obj_exception_add_traceback(exc, lex->source_name, lex->tok_line, MP_QSTRnull);
nlr_raise(exc);
}

2
py/parsenum.c
View File

@ -41,7 +41,7 @@ STATIC NORETURN void raise_exc(mp_obj_t exc, mp_lexer_t *lex) {
// exception's type from ValueError to SyntaxError and add traceback info
if (lex != NULL) {
((mp_obj_base_t*)MP_OBJ_TO_PTR(exc))->type = &mp_type_SyntaxError;
mp_obj_exception_add_traceback(exc, lex->source_name, lex->tok_line, MP_QSTR_NULL);
mp_obj_exception_add_traceback(exc, lex->source_name, lex->tok_line, MP_QSTRnull);
}
nlr_raise(exc);
}

4
py/qstr.h
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@ -35,7 +35,7 @@
// Note: it would be possible to define MP_QSTR_xxx as qstr_from_str_static("xxx")
// for qstrs that are referenced this way, but you don't want to have them in ROM.
// first entry in enum will be MP_QSTR_NULL=0, which indicates invalid/no qstr
// first entry in enum will be MP_QSTRnull=0, which indicates invalid/no qstr
enum {
#ifndef NO_QSTR
#define QDEF(id, str) id,
@ -61,7 +61,7 @@ typedef struct _qstr_pool_t {
void qstr_init(void);
mp_uint_t qstr_compute_hash(const byte *data, size_t len);
qstr qstr_find_strn(const char *str, size_t str_len); // returns MP_QSTR_NULL if not found
qstr qstr_find_strn(const char *str, size_t str_len); // returns MP_QSTRnull if not found
qstr qstr_from_str(const char *str);
qstr qstr_from_strn(const char *str, size_t len);

2
py/repl.c
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@ -159,7 +159,7 @@ size_t mp_repl_autocomplete(const char *str, size_t len, const mp_print_t *print
if (str < top) {
// a complete word, lookup in current object
qstr q = qstr_find_strn(s_start, s_len);
if (q == MP_QSTR_NULL) {
if (q == MP_QSTRnull) {
// lookup will fail
return 0;
}

4
tests/unix/extra_coverage.py
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@ -74,3 +74,7 @@ except ZeroDivisionError:
import uio
buf = uio.resource_stream('frzstr_pkg2', 'mod.py')
print(buf.read(21))
# test for MP_QSTR_NULL regression
from frzqstr import returns_NULL
print(returns_NULL())

1
tests/unix/extra_coverage.py.exp
View File

@ -107,3 +107,4 @@ frzmpy_pkg2.mod
1
ZeroDivisionError
b'# test frozen package'
NULL

2
tools/mpy-tool.py
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@ -70,7 +70,7 @@ class QStrType:
self.qstr_id = 'MP_QSTR_' + self.qstr_esc
# Initialise global list of qstrs with static qstrs
global_qstrs = [None] # MP_QSTR_NULL should never be referenced
global_qstrs = [None] # MP_QSTRnull should never be referenced
for n in qstrutil.static_qstr_list:
global_qstrs.append(QStrType(n))