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-rw-r--r--py/obj.c32
-rw-r--r--py/obj.h2
-rw-r--r--py/objarray.c4
-rw-r--r--py/objlist.c6
-rw-r--r--py/objstr.c48
-rw-r--r--py/objtuple.c2
-rw-r--r--py/sequence.c4
-rw-r--r--tests/basics/list_index.py10
-rw-r--r--tests/basics/string_count.py21
-rw-r--r--tests/basics/string_find.py12
10 files changed, 119 insertions, 22 deletions
diff --git a/py/obj.c b/py/obj.c
index 0c97ee5aa..bdbf8f797 100644
--- a/py/obj.c
+++ b/py/obj.c
@@ -218,20 +218,32 @@ mp_obj_t *mp_obj_get_array_fixed_n(mp_obj_t o_in, machine_int_t n) {
}
}
-uint mp_get_index(const mp_obj_type_t *type, machine_uint_t len, mp_obj_t index) {
- // TODO False and True are considered 0 and 1 for indexing purposes
+// is_slice determines whether the index is a slice index
+uint mp_get_index(const mp_obj_type_t *type, machine_uint_t len, mp_obj_t index, bool is_slice) {
+ int i;
if (MP_OBJ_IS_SMALL_INT(index)) {
- int i = MP_OBJ_SMALL_INT_VALUE(index);
- if (i < 0) {
- i += len;
- }
- if (i < 0 || i >= len) {
- nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_IndexError, "%s index out of range", qstr_str(type->name)));
- }
- return i;
+ i = MP_OBJ_SMALL_INT_VALUE(index);
+ } else if (MP_OBJ_IS_TYPE(index, &bool_type)) {
+ i = index == mp_const_true ? 1 : 0;
} else {
nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "%s indices must be integers, not %s", qstr_str(type->name), mp_obj_get_type_str(index)));
}
+
+ if (i < 0) {
+ i += len;
+ }
+ if (is_slice) {
+ if (i < 0) {
+ i = 0;
+ } else if (i > len) {
+ i = len;
+ }
+ } else {
+ if (i < 0 || i >= len) {
+ nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_IndexError, "%s index out of range", qstr_str(type->name)));
+ }
+ }
+ return i;
}
// may return MP_OBJ_NULL
diff --git a/py/obj.h b/py/obj.h
index d41db37c0..dd80b3f02 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -267,7 +267,7 @@ void mp_obj_get_complex(mp_obj_t self_in, mp_float_t *real, mp_float_t *imag);
#endif
//qstr mp_obj_get_qstr(mp_obj_t arg);
mp_obj_t *mp_obj_get_array_fixed_n(mp_obj_t o, machine_int_t n);
-uint mp_get_index(const mp_obj_type_t *type, machine_uint_t len, mp_obj_t index);
+uint mp_get_index(const mp_obj_type_t *type, machine_uint_t len, mp_obj_t index, bool is_slice);
mp_obj_t mp_obj_len_maybe(mp_obj_t o_in); /* may return NULL */
// none
diff --git a/py/objarray.c b/py/objarray.c
index 30a218311..d0b3e003b 100644
--- a/py/objarray.c
+++ b/py/objarray.c
@@ -113,7 +113,7 @@ STATIC mp_obj_t array_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
switch (op) {
case RT_BINARY_OP_SUBSCR:
{
- uint index = mp_get_index(o->base.type, o->len, rhs);
+ uint index = mp_get_index(o->base.type, o->len, rhs, false);
return mp_binary_get_val(o->typecode, o->items, index);
}
@@ -140,7 +140,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_2(array_append_obj, array_append);
STATIC bool array_store_item(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) {
mp_obj_array_t *o = self_in;
- uint index = mp_get_index(o->base.type, o->len, index_in);
+ uint index = mp_get_index(o->base.type, o->len, index_in, false);
mp_binary_set_val(o->typecode, o->items, index, value);
return true;
}
diff --git a/py/objlist.c b/py/objlist.c
index a6fbe4e42..aa082ea34 100644
--- a/py/objlist.c
+++ b/py/objlist.c
@@ -104,7 +104,7 @@ STATIC mp_obj_t list_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
return res;
}
#endif
- uint index = mp_get_index(o->base.type, o->len, rhs);
+ uint index = mp_get_index(o->base.type, o->len, rhs, false);
return o->items[index];
}
case RT_BINARY_OP_ADD:
@@ -190,7 +190,7 @@ STATIC mp_obj_t list_pop(uint n_args, const mp_obj_t *args) {
if (self->len == 0) {
nlr_jump(mp_obj_new_exception_msg(&mp_type_IndexError, "pop from empty list"));
}
- uint index = mp_get_index(self->base.type, self->len, n_args == 1 ? mp_obj_new_int(-1) : args[1]);
+ uint index = mp_get_index(self->base.type, self->len, n_args == 1 ? mp_obj_new_int(-1) : args[1], false);
mp_obj_t ret = self->items[index];
self->len -= 1;
memcpy(self->items + index, self->items + index + 1, (self->len - index) * sizeof(mp_obj_t));
@@ -383,7 +383,7 @@ void mp_obj_list_get(mp_obj_t self_in, uint *len, mp_obj_t **items) {
void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) {
mp_obj_list_t *self = self_in;
- uint i = mp_get_index(self->base.type, self->len, index);
+ uint i = mp_get_index(self->base.type, self->len, index, false);
self->items[i] = value;
}
diff --git a/py/objstr.c b/py/objstr.c
index 130c3266a..c5c7f87f6 100644
--- a/py/objstr.c
+++ b/py/objstr.c
@@ -107,7 +107,7 @@ STATIC mp_obj_t str_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) {
// TODO: need predicate to check for int-like type (bools are such for example)
// ["no", "yes"][1 == 2] is common idiom
if (MP_OBJ_IS_SMALL_INT(rhs_in)) {
- uint index = mp_get_index(mp_obj_get_type(lhs_in), lhs_len, rhs_in);
+ uint index = mp_get_index(mp_obj_get_type(lhs_in), lhs_len, rhs_in, false);
if (MP_OBJ_IS_TYPE(lhs_in, &bytes_type)) {
return MP_OBJ_NEW_SMALL_INT((mp_small_int_t)lhs_data[index]);
} else {
@@ -290,10 +290,10 @@ STATIC mp_obj_t str_find(uint n_args, const mp_obj_t *args) {
size_t end = haystack_len;
/* TODO use a non-exception-throwing mp_get_index */
if (n_args >= 3 && args[2] != mp_const_none) {
- start = mp_get_index(&str_type, haystack_len, args[2]);
+ start = mp_get_index(&str_type, haystack_len, args[2], true);
}
if (n_args >= 4 && args[3] != mp_const_none) {
- end = mp_get_index(&str_type, haystack_len, args[3]);
+ end = mp_get_index(&str_type, haystack_len, args[3], true);
}
const byte *p = find_subbytes(haystack + start, haystack_len - start, needle, needle_len);
@@ -487,6 +487,46 @@ STATIC mp_obj_t str_replace(uint n_args, const mp_obj_t *args) {
return mp_obj_str_builder_end(replaced_str);
}
+STATIC mp_obj_t str_count(uint n_args, const mp_obj_t *args) {
+ assert(2 <= n_args && n_args <= 4);
+ assert(MP_OBJ_IS_STR(args[0]));
+ assert(MP_OBJ_IS_STR(args[1]));
+
+ GET_STR_DATA_LEN(args[0], haystack, haystack_len);
+ GET_STR_DATA_LEN(args[1], needle, needle_len);
+
+ size_t start = 0;
+ size_t end = haystack_len;
+ /* TODO use a non-exception-throwing mp_get_index */
+ if (n_args >= 3 && args[2] != mp_const_none) {
+ start = mp_get_index(&str_type, haystack_len, args[2], true);
+ }
+ if (n_args >= 4 && args[3] != mp_const_none) {
+ end = mp_get_index(&str_type, haystack_len, args[3], true);
+ }
+
+ machine_int_t num_occurrences = 0;
+
+ // needle won't exist in haystack if it's longer, so nothing to count
+ if (needle_len > haystack_len) {
+ MP_OBJ_NEW_SMALL_INT(0);
+ }
+
+ for (machine_uint_t haystack_index = start; haystack_index <= end; haystack_index++) {
+ for (machine_uint_t needle_index = 0; needle_index < needle_len; needle_index++) {
+ if ((haystack_index + needle_len) > end) {
+ return MP_OBJ_NEW_SMALL_INT(num_occurrences);
+ }
+ if (haystack[haystack_index + needle_index] == needle[needle_index] && needle_index == (needle_len - 1)) {
+ num_occurrences++;
+ }
+
+ }
+ }
+
+ return MP_OBJ_NEW_SMALL_INT(num_occurrences);
+}
+
STATIC machine_int_t str_get_buffer(mp_obj_t self_in, buffer_info_t *bufinfo, int flags) {
if (flags == BUFFER_READ) {
GET_STR_DATA_LEN(self_in, str_data, str_len);
@@ -508,6 +548,7 @@ STATIC MP_DEFINE_CONST_FUN_OBJ_2(str_startswith_obj, str_startswith);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_strip_obj, 1, 2, str_strip);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR(str_format_obj, 1, str_format);
STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_replace_obj, 3, 4, str_replace);
+STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(str_count_obj, 2, 4, str_count);
STATIC const mp_method_t str_type_methods[] = {
{ "find", &str_find_obj },
@@ -517,6 +558,7 @@ STATIC const mp_method_t str_type_methods[] = {
{ "strip", &str_strip_obj },
{ "format", &str_format_obj },
{ "replace", &str_replace_obj },
+ { "count", &str_count_obj },
{ NULL, NULL }, // end-of-list sentinel
};
diff --git a/py/objtuple.c b/py/objtuple.c
index d39b36d9f..827441f70 100644
--- a/py/objtuple.c
+++ b/py/objtuple.c
@@ -111,7 +111,7 @@ mp_obj_t tuple_binary_op(int op, mp_obj_t lhs, mp_obj_t rhs) {
return res;
}
#endif
- uint index = mp_get_index(o->base.type, o->len, rhs);
+ uint index = mp_get_index(o->base.type, o->len, rhs, false);
return o->items[index];
}
case RT_BINARY_OP_ADD:
diff --git a/py/sequence.c b/py/sequence.c
index d3c3e3285..1723bb416 100644
--- a/py/sequence.c
+++ b/py/sequence.c
@@ -149,9 +149,9 @@ mp_obj_t mp_seq_index_obj(const mp_obj_t *items, uint len, uint n_args, const mp
uint stop = len;
if (n_args >= 3) {
- start = mp_get_index(type, len, args[2]);
+ start = mp_get_index(type, len, args[2], true);
if (n_args >= 4) {
- stop = mp_get_index(type, len, args[3]);
+ stop = mp_get_index(type, len, args[3], true);
}
}
diff --git a/tests/basics/list_index.py b/tests/basics/list_index.py
index f28263fba..a669e69c4 100644
--- a/tests/basics/list_index.py
+++ b/tests/basics/list_index.py
@@ -3,6 +3,16 @@ print(a.index(1))
print(a.index(2))
print(a.index(3))
print(a.index(3, 2))
+print(a.index(1, -100))
+print(a.index(1, False))
+
+try:
+ print(a.index(1, True))
+except ValueError:
+ print("Raised ValueError")
+else:
+ print("Did not raise ValueError")
+
try:
print(a.index(3, 2, 2))
except ValueError:
diff --git a/tests/basics/string_count.py b/tests/basics/string_count.py
new file mode 100644
index 000000000..42f807c93
--- /dev/null
+++ b/tests/basics/string_count.py
@@ -0,0 +1,21 @@
+print("asdfasdfaaa".count("asdf", -100))
+print("asdfasdfaaa".count("asdf", -8))
+print("asdf".count('s', True))
+print("asdf".count('a', True))
+print("asdf".count('a', False))
+print("asdf".count('a', 1 == 2))
+print("hello world".count('l'))
+print("hello world".count('l', 5))
+print("hello world".count('l', 3))
+print("hello world".count('z', 3, 6))
+print("aaaa".count('a'))
+print("aaaa".count('a', 0, 3))
+print("aaaa".count('a', 0, 4))
+print("aaaa".count('a', 0, 5))
+print("aaaa".count('a', 1, 5))
+print("aaaa".count('a', -1, 5))
+
+def t():
+ return True
+
+print("0000".count('0', t()))
diff --git a/tests/basics/string_find.py b/tests/basics/string_find.py
index 90063228f..df65fd6e5 100644
--- a/tests/basics/string_find.py
+++ b/tests/basics/string_find.py
@@ -9,3 +9,15 @@ print("hello world".find("ll", 1, 2))
print("hello world".find("ll", 1, 3))
print("hello world".find("ll", 1, 4))
print("hello world".find("ll", 1, 5))
+print("hello world".find("ll", -100))
+print("0000".find('0'))
+print("0000".find('0', 0))
+print("0000".find('0', 1))
+print("0000".find('0', 2))
+print("0000".find('0', 3))
+print("0000".find('0', 4))
+print("0000".find('0', 5))
+print("0000".find('-1', 3))
+print("0000".find('1', 3))
+print("0000".find('1', 4))
+print("0000".find('1', 5))
generated by cgit v1.2.3 (git 2.46.0) at 2025-12-30 13:07:17 +0000