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5470 Commits

Author SHA1 Message Date
Roberto Ierusalimschy 7288528a1e Short strings always use all bytes in the hash 
Collisions in short strings occurr just by their existence, when
internalizing them. (Collisions in long strings is caused/controlled
by the program, when adding them as keys to the same table.)
 2020-04-01 10:52:41 -03:00
Roberto Ierusalimschy 513559cc47 Fixed bug in 'string.format("%p")' 
The string "(null)" used for non-collectable values must be printed as a
string, not as a pointer. (Bug introduced in commit e0cbaa50fa).
 2020-03-16 14:13:13 -03:00
Roberto Ierusalimschy e460752323 Fixed "conceptual" bug in 'luaK_setreturns' 
This function was computing invalid instruction addresses when the
expression was not a multi-return instruction. (Virtually all machines
don't raise errors when computing an invalid address, as long as the
address is not accessed, but this computation is undefined behavior in
ISO C.)
 2020-03-02 13:24:06 -03:00
Roberto Ierusalimschy 92594f0939 Corrected direct use of 'snprintf' in 'lstrlib.c' 2020-02-28 10:37:14 -03:00
Roberto Ierusalimschy e8a52281d9 Code style in 'ldump'/'lundump'. 
- function names start with lower case;
- state is always the first parameter.
 2020-02-27 15:17:44 -03:00
Roberto Ierusalimschy 6eb53b7526 Details 
Several details in code (e.g., moving a variable to the most inner
scope that encloses its uses), comments, parameter names, extra tests.
 2020-02-27 12:59:22 -03:00
Roberto Ierusalimschy 9b7987a9d1 OP_LOADFALSE broken in two instructions 2020-02-11 11:12:33 -03:00
Roberto Ierusalimschy 28ef7061bb Tag values don't need to be different from type values 
Variants can use zero for first variant.
 2020-01-31 13:13:28 -03:00
Roberto Ierusalimschy 46c3587a6f Clearer distinction between types and tags 
LUA_T* represents only types; tags (types + Variants) are represented
by LUA_V* constants.
 2020-01-31 11:09:53 -03:00
Roberto Ierusalimschy 69c7139ff8 New macro 'makevariant' to codify variant tags 2020-01-06 14:50:36 -03:00
Roberto Ierusalimschy 5ff408d218 Changed internal representation of booleans 
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
Roberto Ierusalimschy e3c83835e7 Fixed bug in 'aux_rawset' 
In 'aux_rawset', top must be decremented after the barrier, which
refers to top-1. (Bug introduced in commit c646e57fd.)
 2019-12-30 14:53:38 -03:00
Roberto Ierusalimschy bd1b87c579 Comments (mosty typos) 2019-12-30 11:45:08 -03:00
Roberto Ierusalimschy d7bb8df841 Copyright year changed to 2020 2019-12-27 10:38:53 -03:00
Roberto Ierusalimschy c646e57fd6 Joined common code in 'lua_rawset' and 'lua_rawsetp' 2019-12-17 15:45:13 -03:00
Roberto Ierusalimschy e0ab13c62f Easy way to allow Unicode characters in identifiers 
For those that want to try it...
 2019-12-17 14:24:30 -03:00
Roberto Ierusalimschy e0cbaa50fa Added test for NULL in string.format("%p") 
ISO C states that standard library functions should not be called
with NULL arguments, unless stated otherwise. 'sprintf' does not
state otherwise, and it doesn't hurt to be on the safe side.
 2019-12-17 10:49:55 -03:00
Roberto Ierusalimschy 3747487320 Small correction in assertion 2019-12-13 14:02:42 -03:00
Roberto Ierusalimschy 1e0ad018ce Comment about LUA_COMPAT_LT_LE moved to proper place 2019-12-10 13:50:20 -03:00
Roberto Ierusalimschy 95735bda46 Simplifications in 'op_arith*' family of macros 2019-12-05 14:51:58 -03:00
Roberto Ierusalimschy d30569c064 Using an enumeration for float->integer coercion modes 2019-12-05 14:14:29 -03:00
Roberto Ierusalimschy 2d92102dee 'l_mathlim' renamed to 'l_floatatt' 
That macro is applied to float attributes, not to limits.
 2019-12-05 13:31:07 -03:00
Roberto Ierusalimschy 490ecfcaa1 Better comments about the use of 'k' in opcodes 2019-12-05 12:59:42 -03:00
Roberto Ierusalimschy e174f43807 Manual a little more clear about string->number coersions 2019-12-05 12:57:40 -03:00
Roberto Ierusalimschy 81f2401c6d Code reorganization for opcodes OP_FORPREP and OP_FORLOOP 
Parts of the code for opcodes OP_FORPREP and OP_FORLOOP were moved
to functions outside the interpreter loop.
 2019-12-04 16:51:53 -03:00
Roberto Ierusalimschy 508a705c1c Removed some wrong comments 
Both 'tonumber' and 'tointeger' cannot change the out parameter when
the conversion fails.
 2019-11-28 18:10:26 -03:00
Roberto Ierusalimschy 6f1c033d72 More generic pattern when testing 'string.format' 
The result of 'string.format("%a", 0.0)' can have multiple zeros
after the dot.
 2019-11-22 11:07:47 -03:00
Roberto Ierusalimschy 5f83fb6582 Details 2019-11-18 14:54:06 -03:00
Roberto Ierusalimschy 679dc72c08 Using 'metavalues' for "metamethods" that are not methods 
Several "metamethods" are not required to be methods (functions),
so it seems clearer not to call them metamethods. The manual now
uses the word 'metavalue' for those values.
 2019-11-08 15:45:55 -03:00
Roberto Ierusalimschy 1499680f9e Comments in 'lopcodes.h' 
Both 'R' and 'K' are arrays, so the comments should use square
brackets to index them.
 2019-11-07 10:57:57 -03:00
Roberto Ierusalimschy bdcfae2e1c File 'bugs' no longer tracked by git 
The file 'bugs' reports bugs in several different versions
(corresponding to different branches in the repository), without
a clear division of "this bugs belongs to this version". So, it
doesn't make sense to track it along with one (or many) versions.
 2019-10-30 16:46:11 -03:00
Roberto Ierusalimschy 7d526e75a7 Fixed bug in tail calls of __call chains 
A tail call of a __call chain (a __call metamethod that itself is
also not a function) was being perfomed as a regular call.
 2019-10-28 15:58:07 -03:00
Roberto Ierusalimschy c12983cf8a Fixed warnings from Keil compiler 2019-10-25 17:41:40 -03:00
Roberto Ierusalimschy ba9cd0d25a Change in the prefix of messages from searchers 
The initial "\n\t" to properly indent a searcher message is being added
by 'findloader' when building the error message, instead of being
included in the original message by each searcher itself.
 2019-10-24 10:49:44 -03:00
Roberto Ierusalimschy b93f3b00bb Added function 'luaL_buffsub' 2019-10-23 11:10:19 -03:00
Roberto Ierusalimschy 4c32d9300c Several enhancements in the manual 2019-10-23 10:41:47 -03:00
Roberto Ierusalimschy 6e285e5392 More pious implementation of 'string.dump' 
In 'str__dump', the call to 'lua_dump' assumes the function is on the
top of the stack, but the manual allows 'luaL_buffinit' to push stuff
on the stack (although the current implementation does not).  So, the
call to 'luaL_buffinit' must come after the call to 'lua_dump'.
 2019-10-23 10:31:02 -03:00
Roberto Ierusalimschy b8cdea0190 Changed definition of macro 'l_isfalse' 
The old definition did one test for nil, but three tests for the all
too common booleans (and two tests for other values); this definition
does two tests for all values.
 2019-10-22 14:10:54 -03:00
Roberto Ierusalimschy e592f94a64 Details (mostly comments) 2019-10-22 14:08:22 -03:00
Roberto Ierusalimschy 6e1aec7a67 Larger C-stack limits for new threads 
New threads were being created with very small C-stack limits.
This is not a problem for coroutines, because 'lua_resume' sets
a new limit, but not all threads are coroutines.
 2019-10-17 13:09:17 -03:00
Roberto Ierusalimschy 6055a039b5 Easy redefinition of valid flags for 'string.format' 2019-10-17 13:02:07 -03:00
Roberto Ierusalimschy 6c0e44464b Improvements in the manual around metamethods 2019-10-08 10:34:43 -03:00
Roberto Ierusalimschy 6a84c32900 No coercion string->number in arithmetic with LUA_NOCVTS2N 2019-10-08 10:29:38 -03:00
Roberto Ierusalimschy 6a10f03ff8 Makefile compiles the Lua compiler with '-Os' 
The performance of the Lua compiler is not critical for Lua
performance, but it is a big component in the source. So, it makes
sense to trade speed for size in this component.
 2019-10-08 10:26:02 -03:00
Roberto Ierusalimschy 7bd1e53753 Fixed a warning and other minor issues 
Fixed some minor issues from the feedback for 5.4-beta rc1.
 2019-10-04 16:17:04 -03:00
Roberto Ierusalimschy b98d41db99 Script 'packtests' gets Lua version as a parameter 2019-10-02 17:04:06 -03:00
Roberto Ierusalimschy b2a580bdb1 Janitorial work 
- 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
Roberto Ierusalimschy 89f6a85f03 Details in the makefile (warning options) 2019-09-24 14:43:32 -03:00
Roberto Ierusalimschy 6ef366644f Subtraction of small constant integers optimized with OP_ADDI 2019-09-24 14:34:52 -03:00
Roberto Ierusalimschy 03cde80b58 'setCstacklimit' renamed to 'setcstacklimit' 
Function names in the API use only lowercase letters.
 2019-09-24 14:31:06 -03:00