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46c3587a6f
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327 Commits

Author SHA1 Message Date
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
4518e5df24 Added macro 'testMMMode' 
Macro 'testMMMode' checks whether opcode is an MM opcode.
 2019-09-06 14:14:11 -03:00
Roberto Ierusalimschy
46b84580d6 Use of 'MMBIN' opcodes extended to shift operators 
Plus, this commit removes useless 'tm' parameters in 'op_*' macros.
 2019-08-28 09:58:03 -03:00
Roberto Ierusalimschy
df13f25948 First version of OP_MMBIN opcodes 
In arithmetic/bitwise operators, the call to metamethods is made
in a separate opcode following the main one. (The main
opcode skips this next one when the operation succeeds.) This
change reduces slightly the size of the binary and the complexity
of the arithmetic/bitwise opcodes. It also simplfies the treatment
of errors and yeld/resume in these operations, as there are much
fewer cases to consider. (Only OP_MMBIN/OP_MMBINI/OP_MMBINK,
instead of all variants of all arithmetic/bitwise operators.)
 2019-08-27 13:59:39 -03:00
Roberto Ierusalimschy
fe040633a1 Tracebacks recognize metamethods '__close' 2019-07-31 11:22:39 -03:00
Roberto Ierusalimschy
2c68e66570 Details 
Several small changes from feedback on 5.4 alhpa rc1 (warnings,
typos in the manual, and the like)
 2019-06-03 11:36:42 -03:00
Roberto Ierusalimschy
5ca1075b71 Added field 'srclen' to structure 'lua_Debug' 
This new field gets the length of 'source' in the same structure.
Unlike the other strings in that structure, 'source' can be
relatively large, and Lua already has its length readily available.
 2019-04-04 11:45:26 -03:00
Roberto Ierusalimschy
6d04537ea6 A to-be-closed variable must have a closable value (or be nil) 
It is an error for a to-be-closed variable to have a non-closable
non-nil value when it is being closed. This situation does not seem to
be useful and often hints to an error. (Particularly in the C API, it is
easy to change a to-be-closed index by mistake.)
 2018-11-29 16:02:44 -02:00
Roberto Ierusalimschy
84e32ad2eb Added opcodes for arithmetic with K operands 
Added opcodes for all seven arithmetic operators with K operands
(that is, operands that are numbers in the array of constants of
the function). They cover the cases of constant float operands
(e.g., 'x + .0.0', 'x^0.5') and large integer operands (e.g.,
'x % 10000').
 2018-11-23 12:23:45 -02:00
Roberto Ierusalimschy
e073cbc2e5 Better error messages for invalid operands in numeric 'for' 
"Better" and similar to error messages for invalid function arguments.
  *old message: 'for' limit must be a number
  *new message: bad 'for' limit (number expected, got table)
 2018-10-30 15:46:56 -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
6f2b8e21c4 added 'const' to 'Proto*' when possible 2018-06-08 16:06:59 -03:00
Roberto Ierusalimschy
e64e20ac81 minimizing the code ran by 'vmfetch' + no more 'vra' 
(the code is simpler without 'vra' and conversion is a no-op)
 2018-05-02 15:17:59 -03:00
Roberto Ierusalimschy
4907444db9 'fTransfer' -> 'ftransfer' / 'nTransfer' -> 'ntransfer' 
(keep the standard of names in lower case)
 2018-03-16 12:33:34 -03:00
Roberto Ierusalimschy
422318f677 two new fields 'fTransfer'/'nTransfer' in 'lua_Debug' structure 
(for information about values being given and returned in function calls)
 2018-02-17 17:29:29 -02:00
Roberto Ierusalimschy
b1379936cf vararg back to '...' (but with another implementation) 
new implementation should have zero overhead for non-vararg functions
 2018-02-09 13:16:06 -02:00
Roberto Ierusalimschy
51280ef2ad call hooks for Lua functions called by 'luaV_execute' 2018-02-06 17:16:56 -02:00
Roberto Ierusalimschy
728ff94595 error handler in protected calls must be a function 2018-01-10 10:02:35 -02:00
Roberto Ierusalimschy
cf7eff45f3 keep control of stack top in Lua functions concentrated in 'luaV_execute' 2017-12-28 13:42:57 -02:00
Roberto Ierusalimschy
1d5b885437 when running Lua code, there is no need to keep 'L->top' "correct"; 
set it only when needed.
 2017-12-20 12:58:05 -02:00
Roberto Ierusalimschy
b3f924bc69 'Proto->numparams' does not include vararg parameter 
(one less subtraction when calling functions...)
 2017-12-15 11:07:10 -02:00
Roberto Ierusalimschy
86431a2f1c new opcodes BANDK/BORK/BXORK. (They do not use immediate operands 
because, too often, masks in bitwise operations are integers larger
than one byte.)
 2017-12-13 16:32:09 -02:00
Roberto Ierusalimschy
9fa1baf6de opcodes for order and shift can use several metamethods, 
so it is better to use a generic description + metamethod names
in some error messages shown without '__' prefix
 2017-12-07 13:44:10 -02:00
Roberto Ierusalimschy
599f1742c6 detail (typo in comments) 2017-11-23 17:29:04 -02:00
Roberto Ierusalimschy
196c87c9ce no more 'stackless' implementation; 'luaV_execute' calls itself 
recursively to execute function calls. 'unroll' continues all
executions suspended by an yield (through a long jump)
 2017-11-23 14:41:16 -02:00
Roberto Ierusalimschy
5440b42f43 using 'trap' to stop 'luaV_execute' when necessary (tracing and 
to update its copy of 'base' when the stack is reallocated)
 2017-11-13 13:36:52 -02:00
Roberto Ierusalimschy
62f3b7c472 detail 2017-11-13 10:20:51 -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
c3e5946fb2 new format for JUMP instructions (to allow larger offsets) 2017-11-07 15:20:42 -02:00
Roberto Ierusalimschy
ad0704e40c back to 'CallInfo' (no gains with its removal) 2017-11-07 11:25:26 -02:00
Roberto Ierusalimschy
6bb3e40a8d 'lua_Debug' not using 'CallInfo' 2017-11-03 18:41:05 -02:00
Roberto Ierusalimschy
7612f7735d removing uses of 'CallInfo' 2017-11-03 17:33:22 -02:00
Roberto Ierusalimschy
472c560705 no more useful fields in CallInfo 2017-11-03 15:22:54 -02:00
Roberto Ierusalimschy
54eb35a8aa more fields moved out of 'CallInfo' 2017-11-03 10:12:30 -02:00
Roberto Ierusalimschy
ba36180fd7 new API for 'lua_resume' + cleaning the uses of the 'extra' field in 
'CallInfo'
 2017-11-02 09:28:56 -02:00
Roberto Ierusalimschy
b9e76be8a6 using 'L->func' when possible 2017-11-01 16:20:48 -02:00
Roberto Ierusalimschy
ad5dcdcf0f detail: in 'isinstack', check against the whole stack instead 
of against the stack frame
 2017-10-31 15:14:02 -02:00
Roberto Ierusalimschy
a1ef58b3a5 eplicit 1-bit opcode operand 'k' 2017-10-04 18:56:32 -03:00
Roberto Ierusalimschy
8fbe9e3470 new opcodes with immediate integer operand for all arithmetic operations 2017-10-04 12:49:24 -03:00
Roberto Ierusalimschy
b1daa069ba bug: Lua does not check GC when creating error messages 2017-07-10 14:35:12 -03:00
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
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
6d95de83c6 no more field 'base' in CallInfo (base is always equal to 'func + 1', 
with old/new vararg implementation)
 2017-05-13 10:54:47 -03:00
Roberto Ierusalimschy
5c8770f896 back to old-style vararg system (with vararg table collecting extra 
arguments)
 2017-05-13 10:04:33 -03:00
Roberto Ierusalimschy
a454e884e0 details in 'findsetreg' 2017-04-29 12:28:38 -03:00
Roberto Ierusalimschy
502a1d1108 new opcodes for table access with constant keys (strings and integers) 2017-04-28 17:57:45 -03:00
Roberto Ierusalimschy
173e41b2eb new opcode OP_ADDI (for immediate integer operand) (Experimental) 2017-04-26 14:46:52 -03:00
Roberto Ierusalimschy
e2dc807c6e check whether function is finalizer when finding a name for it + 
comments + some instructions can call functions in unespected ways
(e.g., finalizers)
 2016-10-19 10:32:10 -02:00