37c215b43f
Merge branch 'newarray' into nextversion
2023-11-07 17:26:15 -03:00
9e99f3071d
Merge branch 'master' into nextversion
2023-11-07 17:25:46 -03:00
fa075b7953
Merge branch 'master' into newarray
2023-11-03 15:39:14 -03:00
08a077d673
Full implementation of new representation for arrays
2023-11-03 15:26:13 -03:00
43c8e5bded
Full abstraction for representation of array values
2023-10-30 14:25:59 -03:00
b8b709b6d4
Avoid direct accesses to the array part of a table
2023-10-27 16:32:49 -03:00
81e4fce530
Simpler test in 'luaH_getint'
...
The test whether key is inside the array part of a table uses a bit
trick to avoid computing the real size of the array part.
2023-10-26 16:12:25 -03:00
ab6a949522
Merge branch 'master' into nextversion
2023-06-22 11:41:48 -03:00
819bd51d87
Some cleaning in the new table API
2023-05-16 16:53:29 -03:00
f8d30826dd
New table API for 'set' functions
2023-05-16 14:55:49 -03:00
351ccd7332
Towards a new implementation of arrays
...
The array part of a table wastes too much space, due to padding.
To avoid that, we need to store values in the array as something
different from a TValue. Therefore, the API for table access
should not assume that any value in a table lives in a *TValue.
This commit is the first step to remove that assumption: functions
luaH_get*, instead of returning a *TValue where the value lives,
receive a *TValue where to put the value being accessed.
(We still have to change the luaH_set* functions.)
2023-05-15 17:56:25 -03:00
934e77a286
Details
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- Better comments about short strings in opcodes.
- luaH_newkey made static.
2023-05-15 10:07:25 -03:00
1de2f31694
Corrected support for 16-bit systems
...
We still need access to a 16-bit system to correctly test
these changes.
2023-03-09 11:10:04 -03:00
8047b2d03e
Tables have a 'lastfree' information only when needed
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Only tables with some minimum number of entries in their hash part
have a 'lastfree' field, kept in a header before the node vector.
2022-11-01 15:42:08 -03:00
b85816b9a8
Removed test function 'luaH_isdummy'
...
It was not being used anywhere.
2022-10-21 09:18:13 -03:00
14d2803e55
Details
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Some cast operations rewritten to use respective macros.
2022-10-19 16:29:54 -03:00
ad3942adba
Main 'mainposition' replaced by 'mainpositionTV'
...
Handle values in table keys as the special cases they are, and not
the other way around.
2021-11-25 11:07:17 -03:00
0e5071b5fb
Avoid taking the address of a 'TValue' field
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That structure can be packed in the future.
2021-10-11 13:52:26 -03:00
7fbe215808
New hash function for integer keys
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When integer keys do not form a sequence, it is better to use all their
bits to compute their hashes. (The previous implementation was quite bad
for integer keys with common lower bits, and disastrous for integer keys
changing only in their upper 32 bits.)
2021-03-29 15:47:18 -03:00
014daf43cb
Details
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Comments and order of hashing macros in 'ltable.c'.
2021-03-12 11:29:34 -03:00
59c88f846d
Broadening the use of branch hints
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More uses of macros 'likely'/'unlikely' (renamed to
'l_likely'/'l_unlikely'), both in range (extended to the
libraries) and in scope (extended to hooks, stack growth).
2021-02-24 11:14:44 -03:00
553b37ce4f
Do not insert nil values into tables
2020-12-29 13:38:47 -03:00
23051e830a
Changes in the API of 'luaH_set' and related functions
...
Functions to set values in a table (luaH_set, luaH_newkey, etc.) receive
the new value, instead of returning a slot where to put the value.
2020-12-04 11:08:42 -03:00
d742a193e5
Comments
2020-10-22 15:54:46 -03:00
52c8679760
Fixed bug of keys removed from tables vs 'next'
...
Fixed the bug that a key removed from a table might not be found
again by 'next'. (This is needed to allow keys to be removed during a
traversal.) This bug was introduced in commit 73ec04fc
2020-10-14 15:46:58 -03:00
7c3cb71fa4
Free bit 7 of GC 'marked' field
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Tables were using this bit to indicate their array sizes were real
('isrealasize'), but this bit can be useful for tests. Instead, they
can use bit 7 of their 'flag' field for that purpose. (There are only
six fast-access metamethods.) This 'flag' field only exists in tables,
so this use does not affect other types.
2020-08-07 11:21:44 -03:00
46c3587a6f
Clearer distinction between types and tags
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LUA_T* represents only types; tags (types + Variants) are represented
by LUA_V* constants.
2020-01-31 11:09:53 -03:00
5ff408d218
Changed internal representation of booleans
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Instead of an explicit value (field 'b'), true and false use different
tag variants. This avoids reading an extra field and results in more
direct code. (Most code that uses booleans needs to distinguish between
true and false anyway.)
2020-01-06 11:38:31 -03:00
d30569c064
Using an enumeration for float->integer coercion modes
2019-12-05 14:14:29 -03:00
e592f94a64
Details (mostly comments)
2019-10-22 14:08:22 -03:00
b2a580bdb1
Janitorial work
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- Several details in 'lcode.c'
- A few more tests for code generation
- Bug in assert in 'lcode.c' ("=" x "==")
- Comments in 'lopcodes.h' and 'ltable.c'
2019-10-01 17:24:37 -03:00
279c3a6961
A few changes in tests about number of bits in integers
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- The preprocessor must work with at least 'long', and therefore must
do shifts of up to 31 bits correctly.
- Whenever possible, use unsigned types in shifts.
2019-05-13 16:17:21 -03:00
d12262068d
Small optimizations in range checks
...
Checks of the form '1 <= x && x <= M' were rewritten in the form
'(unsigned)x - 1 < (unsigned)M', which is usually more efficient.
(Other similar checks have similar translations.) Although
some compilers do these optimizations, that does not happen
for all compilers or all cases.
2019-03-27 14:56:10 -03:00
f99509581e
Removed extra information from RCS keyword strings
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Version numbers and dates (mostly wrong) from RCS keyword strings
removed from all source files; only the file name are kept.
2018-08-23 14:26:12 -03:00
2c107e13a8
warning (comparison between signed and unsigned integers)
2018-06-15 11:18:40 -03:00
6e600695f8
field 'sizearray' in struct 'Table' changed to 'alimit', which can
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be used as a hint for '#t'
2018-06-15 11:14:20 -03:00
fb8fa66136
no more 'luaH_emptyobject' and comparisons of addresses of global variables
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(instead, use a different kind of nil to signal the fake entry returned
when a key is not found in a table)
2018-06-01 13:51:34 -03:00
34aa0c5bd7
new macros 'likely'/'unlikely' with hints for jump predictions
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(used only in errors for now)
2018-05-30 11:25:52 -03:00
950fbcb971
detail ('l_castU2S' should only be used over lua_Unsigned values)
2018-05-29 15:01:50 -03:00
ef8263f81f
better names for macros for tags and types.
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rttype -> rawtt; ttyperaw -> withvariant; ttype -> ttypetag;
tnov -> ttype
2018-02-26 11:16:05 -03:00
9243c414d9
first version of empty entries in tables
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(so that, in the future, tables can contain regular nil entries)
2018-02-23 10:16:18 -03:00
465b474899
small reorganization of 'luaV_flttointeger'/'luaV_tointeger'
2018-02-21 09:54:26 -03:00
1afd5a152d
more generic way to handle 'gclist'
2018-02-19 17:06:56 -03:00
e2b15aa21d
janitor work on casts
2018-01-28 13:13:26 -02:00
68af7cc81a
another try with table resize.
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(Old version was leaving some elements unanchored while allocating
new memory)
2017-12-29 13:58:23 -02:00
e663a24ab0
more freedom in handling memory-allocation errors (not all allocations
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automatically raise an error), which allows fixing a bug when resizing
a table.
2017-12-08 15:28:25 -02:00
7622373033
using explicit tests for allocation overflow whenever possible
2017-12-07 16:59:52 -02:00
599f1742c6
detail (typo in comments)
2017-11-23 17:29:04 -02:00
26679ea35b
new function 'luaV_flttointeger' to convert floats to integers (without
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string coercions) + string operands to bitwise operations handled
by string metamethods
2017-11-08 12:50:23 -02:00
f96497397a
new type 'StackValue' for stack elements
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(we may want to put extra info there in the future)
2017-06-29 12:06:44 -03:00
Roberto Ierusalimschy