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

Commit Graph

Author	SHA1	Message	Date
Roberto Ierusalimschy	63295f1f7f	Fixed two bugs in to-be-closed variables x constants The parser were mixing compiler indices of variables with stack indices, so that when a to-be-closed variable was used inside the scope of compile-time constants (which may be optimized away), it might be closed in the wrong place. (See new tests for examples.) Besides fixing the bugs, this commit also changed comments and variable names to avoid that kind of confusion and added tests.	4 years ago
Roberto Ierusalimschy	5f83fb6582	Details	5 years ago
Roberto Ierusalimschy	d6af81084d	New kind of expression VKSTR String literal expressions have their own kind VKSTR, instead of the generic VK. This allows strings to "cross" functions without entering their constant tables (e.g., if they are used only by some nested function).	5 years ago
Roberto Ierusalimschy	f6aab3ec1f	First implementation of constant propagation Local constant variables initialized with compile-time constants are optimized away from the code.	5 years ago
Roberto Ierusalimschy	3d296304ef	Towards constant propagation This commit detaches the number of active variables from the number of variables in the stack, during compilation. Soon, compile-time constants will be propagated and therefore will not exist during run time (in the stack).	5 years ago
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.	5 years ago
Roberto Ierusalimschy	8eca21c2e8	First take on constant propagation	5 years ago
Roberto Ierusalimschy	e4b02ca8e4	Structure 'Vardesc' does not need a 'name' field Removed the field 'name' from the structure 'Vardesc', as the name of the local variable is already available in the prototype of the function, through the index 'idx'.	5 years ago
Roberto Ierusalimschy	d9f40e3f6f	First implementation for 'const' variables A variable can be declared const, which means it cannot be assigned to, with the syntax 'local <const> name = exp'.	6 years ago
Roberto Ierusalimschy	35296e1fde	Details comments and other janitorial work.	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	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	03c6a05ec8	no more nil-in-table	7 years ago
Roberto Ierusalimschy	4a1612ff9b	new experimental syntax using reserved word 'undef'	7 years ago
Roberto Ierusalimschy	e001d5aea6	'VRELOCABLE' -> 'VRELOC'	7 years ago
Roberto Ierusalimschy	10b8c99bbb	small peephole optimizations	7 years ago
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.)	7 years ago
Roberto Ierusalimschy	502a1d1108	new opcodes for table access with constant keys (strings and integers)	8 years ago
Roberto Ierusalimschy	07cf8415e3	more comments + reordeing of union inside 'expdesc' to allow static initialization of a VKINT value	9 years ago
Roberto Ierusalimschy	19770b03a9	comments. (More explanation about kinds of expressions.)	9 years ago
Roberto Ierusalimschy	bdf566a8a3	`name' in comments changed to 'name'	10 years ago
Roberto Ierusalimschy	89b56e7d84	more precision between closure types ('LClosure' x 'CClosure')	11 years ago
Roberto Ierusalimschy	8ef9e8460e	bug (GC can collect long identifier during parser) + change (using a single constant table for all functions in a chunk)	11 years ago
Roberto Ierusalimschy	1294b09d8e	first implementation of literal integers (no constant folding yet)	12 years ago
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.	13 years ago
Roberto Ierusalimschy	59bcd137ae	reducing even more use of C stack by the parser: struct 'FuncState' does not need field 'L' + number of labels/gotos in a chunk may be limited to SHRT_MAX. (Also removed some non-needed 'unsigned's.)	13 years ago
Roberto Ierusalimschy	7482e8f914	no need of lookahead in Zio	14 years ago
Roberto Ierusalimschy	f079749287	some reorganization of dynamic data structures used by the parser	14 years ago
Roberto Ierusalimschy	7cc0e63d8a	first implementation of 'goto'	14 years ago
Roberto Ierusalimschy	81dd13f4c6	new way to distinguish between indexing tables in registers and tables in upvalues (+ fixed small bug when checking conflicts in multiple assignments)	15 years ago
Roberto Ierusalimschy	6a02bbe1e2	better organization for fields in struct 'expdesc'	15 years ago
Roberto Ierusalimschy	25c557ec63	first version of _ENV; no more global variables	15 years ago
Roberto Ierusalimschy	0fe2576a39	new instructions to optimize indexing on upvalues	15 years ago
Roberto Ierusalimschy	916587508c	parser keeps list of active local variables in a single dynamic array, therefore saving C stack space	15 years ago
Roberto Ierusalimschy	0ac3d07ea6	first implementation of lexical environments	15 years ago
Roberto Ierusalimschy	5938212748	information about upvalues (where they come from) kept in Proto structure, instead of sequence of pseudo-opcodes after OP_CLOSURE	15 years ago
Roberto Ierusalimschy	198be23f36	added structure for local-variable information to allow extra checkings if needed	17 years ago
Roberto Ierusalimschy	3d61c31e5a	'lparser.h' should not include 'ltable.h'	19 years ago
Roberto Ierusalimschy	6dd0c6ccbc	numeral expressions keep their values in struct 'expdesc'	19 years ago
Roberto Ierusalimschy	8718fda9b2	added LUAI_FUNC to functions not in the API	20 years ago
Roberto Ierusalimschy	370d31a559	`luac´ -> `luai' (to avoid confusion with other luac stuff)	20 years ago
Roberto Ierusalimschy	f8df21bd20	`luaconf.h´ exports all its definitions always (so all of them must have a lua/LUA prefix).	20 years ago
Roberto Ierusalimschy	b6a7983b65	USHRT_MAX may not fit in a (16-bit) int	20 years ago
Roberto Ierusalimschy	616438fe9a	new way to use `vararg' parameters (with `...')	21 years ago
Roberto Ierusalimschy	9fcc485176	zio does not keep "source" name (nobody uses it)	22 years ago
Roberto Ierusalimschy	265530478b	more changes to reduce stack usage by the parser	22 years ago
Roberto Ierusalimschy	00180bb133	small changes to reduce stack usage by the parser	22 years ago
Roberto Ierusalimschy	7a40cdbda0	different variables for number of upvalues and size of upvalue array (makes code clearer)	22 years ago
Roberto Ierusalimschy	dd8edecae1	new functions to manipulate upvales (get/setupvalue)	22 years ago

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95 Commits (30528049f1d11ea2854a6431e8e8524f83206559)