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116 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
0593256707 'luaH_get' functions return tag of the result 
Undoing previous commit. Returning TValue increases code size without
any visible gains. Returning the tag is a little simpler than returning
a special code (HOK/HNOTFOUND) and the tag is useful by itself in
some cases.
 2024-03-21 11:23:21 -03:00
Roberto Ierusalimschy
ce6f5502c9 'luaH_get' functions return 'TValue' 
Instead of receiving a parameter telling them where to put the result
of the query, these functions return the TValue directly. (That is,
they return a structure.)
 2024-03-18 15:56:32 -03:00
Roberto Ierusalimschy
d862da6d04 Optimizations for 'lua_rawgeti' and 'lua_rawseti' 
'lua_rawgeti' now uses "fast track"; 'lua_rawseti' still calls
'luaH_setint', but the latter was recoded to avoid extra overhead
when writing to the array part after 'alimit'.
 2024-01-12 15:50:51 -03:00
Roberto Ierusalimschy
08a077d673 Full implementation of new representation for arrays 2023-11-03 15:26:13 -03:00
Roberto Ierusalimschy
43c8e5bded Full abstraction for representation of array values 2023-10-30 14:25:59 -03:00
Roberto Ierusalimschy
819bd51d87 Some cleaning in the new table API 2023-05-16 16:53:29 -03:00
Roberto Ierusalimschy
f8d30826dd New table API for 'set' functions 2023-05-16 14:55:49 -03:00
Roberto Ierusalimschy
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
Roberto Ierusalimschy
26be27459b Negation in constant folding of '>>' may overflow 2022-09-23 11:08:10 -03:00
Roberto Ierusalimschy
59c88f846d Broadening the use of branch hints 
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
Roberto Ierusalimschy
0ddc0f47bd Several details about 5.4.0 rc1 
Corrected several small details: added 'const', adjusts in tabs x
spaces, removed unused #includes and #defines, misspellings, etc.
 2020-04-23 14:48:15 -03:00
Roberto Ierusalimschy
d30569c064 Using an enumeration for float->integer coercion modes 2019-12-05 14:14:29 -03:00
Roberto Ierusalimschy
5e76a4fd31 New macros for arithmetic/bitwise operations in 'luaV_execute' 
The repetitive code of the arithmetic and bitwise operators in
the main iterpreter loop was moved to appropriate macros.
(As a detail, the function 'luaV_div' was renamed 'luaV_idiv',
as it does an "integer division" (floor division).
 2018-11-05 16:10:42 -02:00
Roberto Ierusalimschy
5382a22e0e Corrections in the implementation of '%' for floats. 
The multiplication (m*b) used to test whether 'm' is non-zero and
'm' and 'b' have different signs can underflow for very small numbers,
giving a wrong result. The use of explicit comparisons solves this
problem. This commit also adds several new tests for '%' (both for
floats and for integers) to exercise more corner cases, such as
very large and very small values.
 2018-08-28 12:36:58 -03:00
Roberto Ierusalimschy
f99509581e Removed extra information from RCS keyword strings 
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
Roberto Ierusalimschy
6e600695f8 field 'sizearray' in struct 'Table' changed to 'alimit', which can 
be used as a hint for '#t'
 2018-06-15 11:14:20 -03:00
Roberto Ierusalimschy
9243c414d9 first version of empty entries in tables 
(so that, in the future, tables can contain regular nil entries)
 2018-02-23 10:16:18 -03:00
Roberto Ierusalimschy
465b474899 small reorganization of 'luaV_flttointeger'/'luaV_tointeger' 2018-02-21 09:54:26 -03:00
Roberto Ierusalimschy
1afd5a152d more generic way to handle 'gclist' 2018-02-19 17:06:56 -03:00
Roberto Ierusalimschy
c766e4103d 'luaV_execute' gets call info as extra argument (it is always 
available on call sites)
 2017-11-29 11:02:17 -02:00
Roberto Ierusalimschy
26679ea35b new function 'luaV_flttointeger' to convert floats to integers (without 
string coercions) + string operands to bitwise operations handled
by string metamethods
 2017-11-08 12:50:23 -02:00
Roberto Ierusalimschy
4dff277255 coercion string->number in arithmetic operations moved to string 
library
 2017-07-07 13:34:32 -03:00
Roberto Ierusalimschy
f96497397a new type 'StackValue' for stack elements 
(we may want to put extra info there in the future)
 2017-06-29 12:06:44 -03:00
Roberto Ierusalimschy
d13a3fb070 detail 
(removed empty spaces at the end of lines)
 2017-06-09 16:16:41 -03:00
Roberto Ierusalimschy
dad85e4131 macro 'setobj2t' may not be an expression 2017-06-01 17:23:27 -03:00
Roberto Ierusalimschy
7647d5d13d revamp of fast track for table access (table set uses the same 
macros as table get + new macro for integer keys)
 2017-05-11 15:57:46 -03:00
Roberto Ierusalimschy
2a235312f0 detail (removing spaces at end of lines) 2016-12-22 11:08:50 -02:00
Roberto Ierusalimschy
1a44e82200 'luaV_fastget' only treats the real fast case (table with a non-nil 
value at given key, so that it does not need to check metamethods)
 2016-01-05 14:07:21 -02:00
Roberto Ierusalimschy
b91bc93fd3 'setobj2t' incorporated into 'luaV_fastset' + 'invalidateTMcache' 
is not needed in the fast track (as it does not create new
entries)
 2015-09-09 10:44:07 -03:00
Roberto Ierusalimschy
8f25d08637 'invalidateTMcache' not needed in all 'settable' uses 2015-08-03 17:40:26 -03:00
Roberto Ierusalimschy
3b795541c4 fast track for 'settable' 2015-08-03 16:50:49 -03:00
Roberto Ierusalimschy
e247c3ada3 implementation of fast track for gettable operations 2015-07-20 15:24:50 -03:00
Roberto Ierusalimschy
81245b1ad5 'numisinteger' (for table keys) replaced by 'luaV_tointeger' (old 
'tointeger_aux'), which can do the same job.
 2015-02-20 12:27:53 -02:00
Roberto Ierusalimschy
f5c690b684 details in comments 2014-08-01 14:24:02 -03:00
Roberto Ierusalimschy
d861706620 new macro 'cvt2num' to better control whether strings are convertible 
to numbers
 2014-07-30 11:42:44 -03:00
Roberto Ierusalimschy
34ac039fb8 new macro 'cvt2str' to better control whether numbers are convertible 
to strings
 2014-07-30 11:00:14 -03:00
Roberto Ierusalimschy
c98f195eb9 function 'luaV_numtointeger' changed to a global macro 
'lua_numtointeger' (tricky, small, and useful in several places)
 2014-05-26 14:10:22 -03:00
Roberto Ierusalimschy
27d9219cf3 no more integer exponentiation 2014-05-12 18:22:05 -03:00
Roberto Ierusalimschy
e98ba351ce n^-m gives float result (instead of error) 2014-04-27 11:41:11 -03:00
Roberto Ierusalimschy
037a70dfea cast_u2s/cast_s2u renamed l_castS2U/l_castU2S to be configurable from 
outside (mostly for testing)
 2014-04-15 13:32:49 -03:00
Roberto Ierusalimschy
8f961da3db macros cast_integer/cast_unsigned replaced by cast_u2s/cast_s2u, that 
should be used only between lua_Integer and lua_Unsigned
 2014-04-15 11:29:30 -03:00
Roberto Ierusalimschy
ea69f17d98 macro 'tostring' is used only by 'luaV_concat' 2014-03-31 15:37:52 -03:00
Roberto Ierusalimschy
1ea2d20f74 first implementation of '<<', '>>', and '~' (bitwise not) 2013-12-30 18:47:58 -02:00
Roberto Ierusalimschy
a8f8c7fd80 integer exponentiation with negative exponent is invalid 2013-12-16 12:30:22 -02:00
Roberto Ierusalimschy
6920a7f2e3 new macro 'intop' (to perform integer arithmetic on unsigned types) 2013-05-02 09:31:26 -03:00
Roberto Ierusalimschy
88bf2f83c0 new function 'tointeger' + 'luaV_arith' replaced by 'luaT_trybinTM' 2013-04-29 14:12:50 -03:00
Roberto Ierusalimschy
4abe99dc34 new interface for 'tonumber' 2013-04-26 13:03:50 -03:00
Roberto Ierusalimschy
e381c582de integer handling for order comparisons, power, and modulo operations 2013-04-25 16:12:41 -03:00
Roberto Ierusalimschy
07f861385e first steps in the support of integers: basic representation + table indexing + basic API ops (tointeger/pushinteger) + equality + a few extra stuff 2013-04-15 12:44:46 -03:00
Roberto Ierusalimschy
0730a56d38 detail 2013-01-08 12:06:55 -02:00