opensources/lua - lua - Gitea: Git with home nas server

Commit Graph

Author	SHA1	Message	Date
Roberto Ierusalimschy	279c3a6961	A few changes in tests about number of bits in integers - The preprocessor must work with at least 'long', and therefore must do shifts of up to 31 bits correctly. - Whenever possible, use unsigned types in shifts.	6 years ago
Roberto Ierusalimschy	23e6bac8a0	Keep correct type for immediate operands in comparisons When calling metamethods for things like 'a < 3.0', which generates the opcode OP_LTI, the C register tells that the operand was converted to an integer, so that it can be corrected to float when calling a metamethod. This commit also includes some other stuff: - file 'onelua.c' added to the project - opcode OP_PREPVARARG renamed to OP_VARARGPREP - comparison opcodes rewritten through macros	6 years ago
Roberto Ierusalimschy	9b37a4695e	New semantics for the integer 'for' loop The numerical 'for' loop over integers now uses a precomputed counter to control its number of iteractions. This change eliminates several weird cases caused by overflows (wrap-around) in the control variable. (It also ensures that every integer loop halts.) Also, the special opcodes for the usual case of step==1 were removed. (The new code is already somewhat complex for the usual case, but efficient.)	6 years ago
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)	6 years ago
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').	6 years ago
Roberto Ierusalimschy	7f6f70853c	To-be-closed variable in 'for' loop separated from the state The variable to be closed in a generic 'for' loop now is the 4th value produced in the loop initialization, instead of being the loop state (the 2nd value produced). That allows a loop to use a state with a '__toclose' metamethod but do not close it. (As an example, 'f:lines()' might use the file 'f' as a state for the loop, but it should not close the file when the loop ends.)	6 years ago
Roberto Ierusalimschy	a006514ea1	Big revamp in the implmentation of labels/gotos Added restriction that, when a label is created, there cannot be another label with the same name visible. That allows backward goto's to be resolved when they are read. Backward goto's get a close if they jump out of the scope of some variable; labels get a close only if previous goto to it jumps out of the scope of some upvalue.	6 years ago
Roberto Ierusalimschy	6e9b719694	More uniformity in code generation for 'for' loops Added new instruction 'OP_TFORPREP' to prepare a generic for loop. Currently it is equivalent to a jump (but with a format 'iABx', similar to other for-loop preparing instructions), but soon it will be the place to create upvalues for closing loop states.	6 years ago
Roberto Ierusalimschy	4cd1f4aac0	Towards "to closed" local variables Start of the implementation of "scoped variables" or "to be closed" variables, local variables whose '__close' (or themselves) are called when they go out of scope. This commit implements the syntax, the opcode, and the creation of the corresponding upvalue, but it still does not call the finalizations when the variable goes out of scope (the most important part). Currently, the syntax is 'local scoped name = exp', but that will probably change.	6 years ago
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.	6 years ago
Roberto Ierusalimschy	b08c9079c5	Opcode names moved to a new header file The array with the names of the opcodes was moved to a header file ('lopnames.h'), as it is not used by the Lua kernel. Files that need that array ('luac.c' and 'ltests.c') include the header file to get a private (static) copy.	6 years ago
Roberto Ierusalimschy	b43300c14f	change in 'LUAI_DDEC' to allow variables to be static in 'onelua' + change in 'LUAMOD_API' as opening functions do not need to be global	6 years ago
Roberto Ierusalimschy	588dfa4ce5	detail in comment	7 years ago
Roberto Ierusalimschy	03c6a05ec8	no more nil-in-table	7 years ago
Roberto Ierusalimschy	4a1612ff9b	new experimental syntax using reserved word 'undef'	7 years ago
Roberto Ierusalimschy	212095a601	new opcodes OP_GTI/OP_GEI	7 years ago
Roberto Ierusalimschy	0682fe8169	some simplifications/optimizations in returns from Lua functions	7 years ago
Roberto Ierusalimschy	b1379936cf	vararg back to '...' (but with another implementation) new implementation should have zero overhead for non-vararg functions	7 years ago
Roberto Ierusalimschy	318a9a5859	new opcode 'PREPVARARG' (avoids test for vararg function in all function calls)	7 years ago
Roberto Ierusalimschy	73d797ce7e	detail (order of 'OT' and 'IT' bits corresponds with macro 'opmode')	7 years ago
Roberto Ierusalimschy	e2b15aa21d	janitor work on casts	7 years ago
Roberto Ierusalimschy	5bd8d388de	OP_CONCAT does not move its result (to simplify its execution)	7 years ago
Roberto Ierusalimschy	33e3774f44	keep more opcode arguments byte-aligned	7 years ago
Roberto Ierusalimschy	4676f6599e	new macros 'isOT'/'isIT' (plus exchanged parameters of OP_VARARG to make it similar to other 'isOT' instructions)	7 years ago
Roberto Ierusalimschy	d388c165ef	new opcodes 'FORLOOP1'/'FORPREP1' for "basic for" (integer variable with increment of 1)	7 years ago
Roberto Ierusalimschy	f8c1c1469a	some cleaning on signed opcode parameters	7 years ago
Roberto Ierusalimschy	4b6928e7f5	(1 << 31) with signed integer has undefined behavior in C	7 years ago
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.)	7 years ago
Roberto Ierusalimschy	c7ee7fe026	new opcodes OP_SHLI/OP_SHRI	7 years ago
Roberto Ierusalimschy	bdc751ce23	details (comments)	7 years ago
Roberto Ierusalimschy	19c6b375c3	detail (spacing)	7 years ago
Roberto Ierusalimschy	745eb41993	new opcodes OP_RETURN0/OP_RETURN1	7 years ago
Roberto Ierusalimschy	ff5fe51044	using register 'k' for conditions in tests (we only need one bit there)	7 years ago
Roberto Ierusalimschy	093c16b67b	new opcodes 'OP_LTI' and 'OP_LEI'	7 years ago
Roberto Ierusalimschy	3c230cc825	using 'A' for register instead of 'B' in relational opcodes ('R(A)' is already created by default for all instructions.)	7 years ago
Roberto Ierusalimschy	41f2936d8f	new opcode 'OP_EQI' for equality with immediate numbers	7 years ago
Roberto Ierusalimschy	4c0e36a46e	new instruction 'OP_EQK' (for equality with constants)	7 years ago
Roberto Ierusalimschy	c3e5946fb2	new format for JUMP instructions (to allow larger offsets)	7 years ago
Roberto Ierusalimschy	a1ef58b3a5	eplicit 1-bit opcode operand 'k'	7 years ago
Roberto Ierusalimschy	8fbe9e3470	new opcodes with immediate integer operand for all arithmetic operations	7 years ago
Roberto Ierusalimschy	940472c75c	opcode size increased to 7 bits	7 years ago
Roberto Ierusalimschy	bc1b0733b8	avoid the use of bit 'Bk' ('B' will lose this bit soon)	7 years ago
Roberto Ierusalimschy	722bdbe17d	no more 'getBMode'-'getCMode' (imprecise + we will need more space for op mode) + better control of op modes	7 years ago
Roberto Ierusalimschy	00e728af88	binary operators use R instead of RK faster + nobody uses RK(B), so B can be smaller (freeing one bit for more opcodes, soon)	7 years ago
Roberto Ierusalimschy	abb17cf19b	new opcode OP_LOADF (load immediate float)	7 years ago
Roberto Ierusalimschy	e0c0e2ee14	comments (documentation about instruction formats)	7 years ago
Roberto Ierusalimschy	022e4427cf	detail (keep OP_LOADK and OP_LOADKX together)	7 years ago
Roberto Ierusalimschy	80d9b09f35	jumps do not close upvalues (to be faster and simpler); explicit instruction to close upvalues; command 'break' not handled like a 'goto' (to optimize removal of uneeded 'close' instructions)	7 years ago
Roberto Ierusalimschy	ac65bab25f	jumps in 'for' loops don't need to be signed	7 years ago
Roberto Ierusalimschy	07db10813c	'OP_VARARG' has the vararg parameter as an operand	7 years ago

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204 Commits (4d46289331395a845c5de1f6c0e0fe873c50db4f)