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274 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
6a84c32900 No coercion string->number in arithmetic with LUA_NOCVTS2N 2019-10-08 10:29:38 -03:00
Roberto Ierusalimschy
b96b0b5abb Added macro 'luaL_pushfail' 
The macro 'luaL_pushfail' documents all places in the standard libraries
that return nil to signal some kind of failure. It is defined as
'lua_pushnil'. The manual also got a notation (@fail) to document those
returns. The tests were changed to be agnostic regarding whether 'fail'
is 'nil' or 'false'.
 2019-08-16 14:58:02 -03:00
Roberto Ierusalimschy
7f5c31cdca Fixed bug in 'string.format' with option '%f' 
As an example, 'print(string.format("%.99f", 1e70))' may have a
lot of garbage after the number.

The old test to ensure that 'string.format("%.99f", n)' was not too
large, 'fabs(n) < 1e100', assumes that the number will fit in the 99
bytes; but the 99 is not the space for the number, it is the added
extra zeros.  The option worked for smaller numbers because of the
extra space added to MAX_ITEM.
 2019-07-23 12:46:33 -03:00
Roberto Ierusalimschy
2d3f095448 Avoid using large buffers in 'string.format' 
The result of "string.format("%.99f", -1e308) is 410 characters long,
but all other formats have much smaller limits (at most 99 plus a fex
extras). This commit avoids 'string.format' asking for a buffer
~400 chars large when ~100 will do.
 2019-04-12 11:48:24 -03:00
Roberto Ierusalimschy
b0810c51c3 Small optimizations in 'string.gsub' 
Avoid creating extra strings when possible:

- avoid creating new resulting string when subject was not modified
(instead, return the subject itself);

- avoid creating strings representing the captured substrings when
handling replacements like '%1' (instead, add the substring directly
to the buffer).
 2019-04-11 11:29:16 -03:00
Roberto Ierusalimschy
dfebe439db New conversion specifier '%p' for 'string.format' 
The call 'string.format("%p", val)' gives a Lua equivalent to the
C API function 'lua_topointer'.
 2019-03-13 14:04:01 -03:00
Roberto Ierusalimschy
cf71a5ddc7 Details 
Several small improvements (code style, warnings, comments, more tests),
in particular:

- 'lua_topointer' extended to handle strings
- raises an error in 'string.format("%10q")' ('%q' with modifiers)
- in the manual for 'string.format', the term "option" replaced by
  "conversion specifier" (the term used by the C standard)
 2019-03-13 13:16:53 -03:00
Roberto Ierusalimschy
264659bd53 Optional 'init' argument to 'string.gmatch' 
The function 'string.gmatch' now has an optional 'init' argument,
similar to 'string.find' and 'string.match'. Moreover, there was
some reorganization in the manipulation of indices in the string
library.
This commit also includes small janitorial work in the manual
and in comments in the interpreter loop.
 2019-01-08 14:22:32 -02:00
Roberto Ierusalimschy
da37ac9c78 Detail 
Slightly better error message for invalid conversions in 'string.format'.
 2018-12-27 14:19:53 -02:00
Roberto Ierusalimschy
46beca5bed Better error messages for some polymorphic functions 
New auxiliary functions/macros 'luaL_argexpected'/'luaL_typeerror'
ease the creation of error messages such as

  bad argument #2 to 'setmetatable' (nil or table expected, got boolean)

(The novelty being the "got boolean" part...)
 2018-12-10 13:46:03 -02:00
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
b2d4d06428 avoid possible overflows when checking sizes in 'string.unpack' 2018-05-25 10:39:32 -03:00
Roberto Ierusalimschy
b03dddf9e4 removed coercion string->number in bitwise operations 
(can be done with a Lua module)
 2018-02-21 14:48:31 -03:00
Roberto Ierusalimschy
c67603fafb using new 'lua_newuserdatauv' instead of 'lua_newuserdata' 2018-02-21 10:48:44 -03:00
Roberto Ierusalimschy
599f1742c6 detail (typo in comments) 2017-11-23 17:29:04 -02:00
Roberto Ierusalimschy
e4e5aa85a2 detail ('signal' -> 'sign' in comments) 2017-11-16 11:19:06 -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
01c96ad12e handling of inf, -inf, and NaN by string.format'%q' 2017-05-19 13:29:40 -03:00
Roberto Ierusalimschy
1a1b2f3d7f added 'return' to calls to 'luaL_error' (to signal to the compiler 
that the function cannot continue past that call)
 2017-03-14 09:40:44 -03:00
Roberto Ierusalimschy
2a235312f0 detail (removing spaces at end of lines) 2016-12-22 11:08:50 -02:00
Roberto Ierusalimschy
9903dd52a3 Using LUAI_UAC* types more consistently on vararg calls 2016-12-20 16:37:00 -02:00
Roberto Ierusalimschy
09c9fa36ea small corrections for C++ compliance 2016-06-27 10:15:08 -03:00
Roberto Ierusalimschy
707b0ba6e2 'string.format("%q")' writes 'math.mininteger' in hexa, to ensure 
it is read back as an integer
 2016-05-20 11:13:21 -03:00
Roberto Ierusalimschy
4d5ab9baa6 'string.pack("cn")' does not accept strings longer than 'n' 2016-05-18 15:19:51 -03:00
Roberto Ierusalimschy
fbd8614bdb comment (FALLTHROUGH) 2016-05-13 16:09:46 -03:00
Roberto Ierusalimschy
22093f9c6e 'string.format("%q", number)' ensures a dot as decimal point 2016-05-02 10:58:01 -03:00
Roberto Ierusalimschy
57cdb60429 no more time limits to pattern matching (at least for now) 2016-04-22 13:36:30 -03:00
Roberto Ierusalimschy
89c09c8e40 match time limit defined by variable 'string.pattlimit' 2016-04-19 09:34:08 -03:00
Roberto Ierusalimschy
e8e39a277f 'string.format"%q"' now works for all basic types (nil, boolean, 
numbers, and strings)
 2016-04-08 18:15:02 -03:00
Roberto Ierusalimschy
fff7d42a69 LUA_PACKPADBYTE -> LUAL_PACKPADBYTE (it is an internal library 
name, not something to be usually configured)
 2016-04-07 12:40:07 -03:00
Roberto Ierusalimschy
783aa8a9da new way to avoid infinite loops in empty matches: "Python rule" 
("Empty matches for the pattern are replaced only when not
adjacent to a previous match")
 2016-03-31 16:07:42 -03:00
Roberto Ierusalimschy
e747491b96 comments 2016-03-23 15:08:26 -03:00
Roberto Ierusalimschy
acff3ad88d bug: 'gmatch' iterator fails when called from a coroutine different 
from the one that created it
 2016-03-23 14:12:17 -03:00
Roberto Ierusalimschy
c3e9b14d24 '\0' is a control character, no need to check it explicitly 2016-02-25 16:42:55 -03:00
Roberto Ierusalimschy
c25d59a6bd format "%s" in 'string.format' accepts embedded zeros when it 
has no modifiers
 2015-11-25 14:28:17 -02:00
Roberto Ierusalimschy
3feb702df8 ensure argument to 'string.format("%s")' does not contain zeros 2015-11-23 09:31:21 -02:00
Roberto Ierusalimschy
789e423b32 corrected comparisons of signed (int) with unsigned (size_t) 2015-10-29 13:11:41 -02:00
Roberto Ierusalimschy
cc3a42b190 option 'c' in 'string.pack' accepts any string size (truncating 
if larger and padding if smaller)
 2015-10-28 15:56:51 -02:00
Roberto Ierusalimschy
880df57e52 detail (removed unreacheable 'break') 2015-10-08 12:53:05 -03:00
Roberto Ierusalimschy
10fffcd80a 'gmatch' keeps its state in a userdata (keeping the same 'MatchState' 
across calls)
 2015-09-28 15:05:01 -03:00
Roberto Ierusalimschy
8264dbc2bb implemented counter to abort non-linear behavior in pattern matching 2015-09-26 15:45:03 -03:00
Roberto Ierusalimschy
5273477cb9 in 'lua_number2strx', use the call to 'l_sprintf' to add exponent 
to result directly
 2015-07-20 13:30:22 -03:00
Roberto Ierusalimschy
5aabb7a891 buffer size changed from size_t to int (it is always small) + 
comments + assert that printf result fits in given buffer
 2015-06-24 15:25:10 -03:00
Roberto Ierusalimschy
19eb6ae580 using 'snprintf' in C99 (both for documentation of buffer sizes 
and some complains from tools)
 2015-06-18 11:26:05 -03:00
Roberto Ierusalimschy
99391e24ea new configuration macro 'l_mathlim' (simplifies some dependencies 
on float type)
 2015-05-20 14:39:23 -03:00
Roberto Ierusalimschy
48d0674c2e more consistent use of locale radix character across Lua 2015-04-03 15:41:57 -03:00
Roberto Ierusalimschy
e723c75c02 details (avoid 'lint' warnings) 2015-03-28 16:14:47 -03:00
Roberto Ierusalimschy
2a57d2346e detail 2015-02-09 16:05:46 -02:00
Roberto Ierusalimschy
5e8c162b6c detail 2015-02-05 15:50:24 -02:00