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d70a0c91ad
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129 Commits

Author SHA1 Message Date
Roberto Ierusalimschy
d70a0c91ad Dump/undump reuse strings 
A repeated string in a dump is represented as an index to its first
occurence, instead of another copy of the string.
 2022-12-15 16:44:22 -03:00
Roberto Ierusalimschy
413a393e62 Stack indices changed to union's 
That will allow to change pointers to offsets while reallocating
the stack.
 2022-10-29 12:06:37 -03:00
Roberto Ierusalimschy
6bc0f13505 Fixed bug of long strings in binary chunks 
When "undumping" a long string, the function 'loadVector' can call the
reader function, which can run the garbage collector, which can collect
the string being read. So, the string must be anchored during the call
to 'loadVector'.
 2020-08-18 14:42:11 -03:00
Roberto Ierusalimschy
422ce50d2e Fixed detail in 'loadUpvalues' 
In 'lundump.c', when loading the upvalues of a function, there can be
a read error if the chunk is truncated. In that case, the creation
of the error message can trigger an emergency collection while the
prototype is still anchored. So, the prototype must be GC consistent
before loading the upvales, which implies that it the 'name' fields
must be filled with NULL before the reading.
 2020-06-30 15:36:26 -03:00
Roberto Ierusalimschy
c33b1728ae Details 
Added as incompatibility, in the manual, the extra return of 'io.lines'.
 2020-06-18 11:07:27 -03:00
Roberto Ierusalimschy
6d7cd31fee Fixed missing GC barriers in compiler and undump 
While building a new prototype, the GC needs barriers for every object
(strings and nested prototypes) that is attached to the new prototype.
 2020-06-16 09:54:20 -03:00
Roberto Ierusalimschy
61a4e64a66 Back to old encoding of versions in binary files 
(Undoing part of commit f53eabeed8.)  It is better to keep this encoding
stable, so that all Lua versions can read at least the version of a
binary file.
 2020-05-06 14:19:08 -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
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
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
f6aab3ec1f First implementation of constant propagation 
Local constant variables initialized with compile-time constants
are optimized away from the code.
 2019-07-12 11:38:42 -03:00
Roberto Ierusalimschy
54f7b46c1e New implementation for constants 
VLOCAL expressions keep a reference to their corresponding 'Vardesc',
and 'Upvaldesc' (for upvalues) has a field 'ro' (read-only). So, it is
easier to check whether a variable is read-only. The decoupling in
VLOCAL between 'vidx' ('Vardesc' index) and 'sidx' (stack index)
should also help the forthcoming implementation of compile-time
constant propagation.
 2019-07-09 10:43:17 -03:00
Roberto Ierusalimschy
ed2872cd3b 'require' returns where module was found 
The function 'require' returns the *loader data* as a second result.
For file searchers, this data is the path where they found the module.
 2019-04-17 14:57:29 -03:00
Roberto Ierusalimschy
f53eabeed8 Small changes in the header of binary files 
- LUAC_VERSION is equal to LUA_VERSION_NUM, and it is stored
as an int.

- 'sizeof(int)' and 'sizeof(size_t)' removed from the header, as
the binary format does not depend on these sizes. (It uses its
own serialization for unsigned integer values.)
 2019-03-19 15:31:08 -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
b397064955 avoid craches when loading tampered code with NULL as a string constant 2018-06-01 13:45:58 -03:00
Roberto Ierusalimschy
7622373033 using explicit tests for allocation overflow whenever possible 2017-12-07 16:59:52 -02:00
Roberto Ierusalimschy
dfd188ba12 detail (identation of switch) 2017-11-28 09:19:07 -02:00
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
124bfd2081 dumping ints and size_ts compacted 2017-06-27 11:21:12 -03:00
Roberto Ierusalimschy
b42430fd3a 'lineinfo' in prototypes saved as differences instead of absolute 
values, so that the array can use bytes instead of ints, reducing
its size. (A new array 'abslineinfo' is used when line differences
do not fit in a byte.)
 2017-06-27 08:35:31 -03:00
Roberto Ierusalimschy
8c1fb91802 macro 'incr_top' replaced by function 'luaD_inctop'. (It is not used 
in critical time pathes, can save a few bytes without the macro)
 2015-11-02 14:09:30 -02:00
Roberto Ierusalimschy
ee5edb6b68 macros 'getaddrstr' and 'getstr' unified (they do the same thing) 2015-09-17 12:51:05 -03:00
Roberto Ierusalimschy
41964648ee long strings are created directly in final position when possible 
(instead of using an auxiliar buffer to first create the string
and then allocate the final string and copy result there)
 2015-09-08 12:41:05 -03:00
Roberto Ierusalimschy
28fdbcf393 added include for 'lprefix.h', for stuff that must be added before 
any other header file
 2014-11-02 17:19:04 -02:00
Roberto Ierusalimschy
89b56e7d84 more precision between closure types ('LClosure' x 'CClosure') 2014-06-19 15:27:20 -03:00
Roberto Ierusalimschy
7021cc9bc8 allows different 'source' for each prototype, but inherits it from 
parent when they are equal (only possible case for chunks created
by the parser)
 2014-06-18 15:35:43 -03:00
Roberto Ierusalimschy
94266dfdbd source for all prototypes must be equal in a chunk; no need to store 
each one separated
 2014-06-18 10:21:12 -03:00
Roberto Ierusalimschy
ffa43df3cd 'setnvalue' -> 'setfltvalue' (for consitency with 'fltvalue') 2014-04-29 15:14:16 -03:00
Roberto Ierusalimschy
607be77ec8 some details to avoid warnings 2014-04-01 11:39:55 -03:00
Roberto Ierusalimschy
420cc62fac missplelling in comments/function names (endianess -> endianness) 2014-03-27 12:58:05 -03:00
Roberto Ierusalimschy
80fe8504f5 make all dumps/loads go trhough Load/DumpVector (so it is easier 
to adapt the code to correct endianess, if needed)
 2014-03-11 15:56:27 -03:00
Roberto Ierusalimschy
e976384213 keep chunk's headers compatible at least up to LUAC_VERSION (to be 
able to detect correctly version mismatches)
 2014-03-11 15:05:46 -03:00
Roberto Ierusalimschy
901da539e5 no need to avoid negative ints in 'LoadInt' 2014-03-10 16:50:19 -03:00
Roberto Ierusalimschy
197e249433 "indent -kr -i2 -br -brf -nut" plus a few manual formating 2014-03-10 14:56:32 -03:00
Roberto Ierusalimschy
f69e0ade19 no need to store a full 'size_t' fo the size of (frequent) small strings 2014-03-01 12:18:44 -03:00
Roberto Ierusalimschy
99a1c06ea3 more regularity with vectors + sizeof computed by the macros themselves 2014-02-28 13:13:01 -03:00
Roberto Ierusalimschy
93e28031de all chars used in binary dumps are unsigned ('lu_byte') 2014-02-28 09:25:12 -03:00
Roberto Ierusalimschy
de84b3fecb store number of upvalues of main function in front of the dump, 
so that undump can create initial closure before reading its prototype
 2014-02-27 15:56:15 -03:00
Roberto Ierusalimschy
054179c2ff more explicit handling of headers for binary chunks 2014-02-27 13:56:20 -03:00
Roberto Ierusalimschy
733c58595b no more local collection 2014-02-13 10:11:34 -02:00
Roberto Ierusalimschy
439d74e29f added 'local' bit (true => object is only refered by local variables) 2013-08-16 15:55:49 -03:00
Roberto Ierusalimschy
eee51492e2 dumping and undumping integers 2013-04-26 15:48:35 -03:00
Roberto Ierusalimschy
3cadc37f47 no more 'Proto' objects on the stack. Protos are anchored on outer 
Protos or on a Closure, which must be created before the Proto.
 2012-05-08 10:53:33 -03:00
Roberto Ierusalimschy
99bd1a000f error function can be 'l_noret' 2012-03-19 19:58:09 -03:00
Roberto Ierusalimschy
f88806a1fb "default: lua_assert(0)" in switches helps debugging + uses 
non-variant types in binary files
 2012-01-23 21:02:10 -02:00
Roberto Ierusalimschy
f0d143f30f avoid a few warnings (casts) 2011-12-07 16:03:47 -02:00
Roberto Ierusalimschy
6e899850b9 details 2011-11-24 11:25:41 -02:00
Roberto Ierusalimschy
6c8a32217a changes by lhf (better control of chars x bytes) 2011-05-17 09:42:43 -03:00
Roberto Ierusalimschy
7482e8f914 no need of lookahead in Zio 2011-02-23 10:13:10 -03:00