mirror of https://github.com/lua/lua
limits now are in `llims.n'
This commit is contained in:
Roberto Ierusalimschy
parent
47b4bf5964
commit
213e9febc8
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@ -1,5 +1,5 @@
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/*
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** $Id: lbuiltin.c,v 1.95 2000/03/09 00:19:22 roberto Exp roberto $
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** $Id: lbuiltin.c,v 1.96 2000/03/10 18:37:44 roberto Exp roberto $
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** Built-in functions
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** See Copyright Notice in lua.h
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*/
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@ -130,10 +130,6 @@ void luaB__ERRORMESSAGE (lua_State *L) {
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** model but changing `fputs' to put the strings at a proper place
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** (a console window or a log file, for instance).
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*/
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#ifndef MAXPRINT
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#define MAXPRINT 40 /* arbitrary limit */
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#endif
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void luaB_print (lua_State *L) {
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lua_Object args[MAXPRINT];
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lua_Object obj;
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6
lcode.c
6
lcode.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lcode.c,v 1.16 2000/03/20 19:15:37 roberto Exp roberto $
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** $Id: lcode.c,v 1.17 2000/03/24 12:18:30 roberto Exp roberto $
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** Code generator for Lua
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** See Copyright Notice in lua.h
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*/
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@ -212,10 +212,6 @@ void luaK_kstr (LexState *ls, int c) {
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}
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#ifndef LOOKBACKNUMS
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#define LOOKBACKNUMS 20 /* arbitrary limit */
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#endif
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static int real_constant (FuncState *fs, Number r) {
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/* check whether `r' has appeared within the last LOOKBACKNUMS entries */
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Proto *f = fs->f;
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6
ldo.h
6
ldo.h
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@ -1,5 +1,5 @@
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/*
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** $Id: ldo.h,v 1.16 1999/12/30 18:28:40 roberto Exp roberto $
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** $Id: ldo.h,v 1.17 2000/01/19 12:00:45 roberto Exp roberto $
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** Stack and Call structure of Lua
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** See Copyright Notice in lua.h
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*/
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@ -12,10 +12,6 @@
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#include "lstate.h"
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#define MULT_RET 255
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/*
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** macro to increment stack top.
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** There must be always an empty slot at the L->stack.top
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6
llex.c
6
llex.c
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@ -1,5 +1,5 @@
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/*
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** $Id: llex.c,v 1.52 2000/03/03 14:58:26 roberto Exp roberto $
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** $Id: llex.c,v 1.53 2000/03/10 18:37:44 roberto Exp roberto $
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** Lexical Analyzer
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** See Copyright Notice in lua.h
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*/
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@ -114,10 +114,6 @@ void luaX_setinput (lua_State *L, LexState *LS, ZIO *z) {
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** =======================================================
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*/
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#ifndef PRAGMASIZE
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#define PRAGMASIZE 80 /* arbitrary limit */
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#endif
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static void skipspace (LexState *LS) {
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while (LS->current == ' ' || LS->current == '\t' || LS->current == '\r')
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next(LS);
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6
llex.h
6
llex.h
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@ -1,5 +1,5 @@
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/*
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** $Id: llex.h,v 1.19 2000/03/03 14:58:26 roberto Exp roberto $
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** $Id: llex.h,v 1.20 2000/03/10 18:37:44 roberto Exp roberto $
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** Lexical Analyzer
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** See Copyright Notice in lua.h
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*/
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@ -35,10 +35,6 @@ enum RESERVED {
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#define NUM_RESERVED ((int)(TK_WHILE-FIRST_RESERVED+1))
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#ifndef MAX_IFS
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#define MAX_IFS 5 /* arbitrary limit */
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#endif
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/* `ifState' keeps the state of each nested $if the lexical is dealing with. */
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struct ifState {
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46
lobject.h
46
lobject.h
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@ -1,5 +1,5 @@
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/*
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** $Id: lobject.h,v 1.52 2000/03/16 21:06:16 roberto Exp roberto $
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** $Id: lobject.h,v 1.53 2000/03/20 19:14:54 roberto Exp roberto $
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** Type definitions for Lua objects
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** See Copyright Notice in lua.h
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*/
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@ -8,8 +8,7 @@
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#define lobject_h
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#include <limits.h>
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#include "llims.h"
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#include "lua.h"
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@ -26,39 +25,6 @@
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#define UNUSED(x) (void)x /* to avoid warnings */
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/*
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** Define the type `number' of Lua
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** GREP LUA_NUMBER to change that
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*/
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#ifndef LUA_NUM_TYPE
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#define LUA_NUM_TYPE double
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#endif
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typedef LUA_NUM_TYPE Number;
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/*
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** type for virtual-machine instructions
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** must be an unsigned with 4 bytes (see details in lopcodes.h)
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*/
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typedef unsigned long Instruction;
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#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */
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/* conversion of pointer to int (for hashing only) */
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/* (the shift removes bits that are usually 0 because of alignment) */
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#define IntPoint(L, p) (((unsigned long)(p)) >> 3)
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/*
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** number of `blocks' for garbage collection: each reference to other
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** objects count 1, and each 32 bytes of `raw' memory count 1; we add
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** 2 to the total as a minimum (and also to count the overhead of malloc)
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*/
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#define numblocks(L, o,b) ((o)+((b)>>5)+2)
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/*
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** Lua TYPES
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@ -112,7 +78,6 @@ typedef struct TObject {
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} TObject;
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typedef struct GlobalVar {
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TObject value;
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struct GlobalVar *next;
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@ -142,8 +107,6 @@ typedef struct TString {
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} TString;
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/*
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** Function Prototypes
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*/
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@ -173,8 +136,6 @@ typedef struct LocVar {
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/* Macros to access structure members */
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#define ttype(o) ((o)->ttype)
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#define nvalue(o) ((o)->value.n)
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@ -199,7 +160,6 @@ typedef struct Closure {
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} Closure;
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typedef struct Node {
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TObject key;
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TObject val;
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@ -221,8 +181,6 @@ extern const TObject luaO_nilobject;
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#define luaO_typename(o) luaO_typenames[ttype(o)]
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#define MINPOWER2 4 /* minimum size for "growing" vectors */
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unsigned long luaO_power2 (unsigned long n);
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#define luaO_equalObj(t1,t2) (ttype(t1) == ttype(t2) && luaO_equalval(t1,t2))
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68
lopcodes.h
68
lopcodes.h
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@ -1,5 +1,5 @@
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/*
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** $Id: lopcodes.h,v 1.49 2000/03/13 20:37:16 roberto Exp roberto $
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** $Id: lopcodes.h,v 1.50 2000/03/16 18:03:09 roberto Exp roberto $
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** Opcodes for Lua virtual machine
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** See Copyright Notice in lua.h
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*/
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@ -7,36 +7,32 @@
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#ifndef lopcodes_h
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#define lopcodes_h
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#include "llims.h"
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/*===========================================================================
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We assume that instructions are unsigned numbers with 4 bytes.
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All instructions have an opcode in the 8 bits. Moreover,
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We assume that instructions are unsigned numbers.
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All instructions have an opcode in the first 6 bits. Moreover,
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an instruction can have 0, 1, or 2 arguments. There are 4 types of
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Instructions:
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type 0: no arguments
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type 1: 1 unsigned argument in the higher 24 bits (called `U')
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type 2: 1 signed argument in the higher 24 bits (`S')
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type 3: 1st unsigned argument in the higher 16 bits (`A')
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2nd unsigned argument in the middle 8 bits (`B')
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type 1: 1 unsigned argument in the higher bits (called `U')
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type 2: 1 signed argument in the higher bits (`S')
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type 3: 1st unsigned argument in the higher bits (`A')
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2nd unsigned argument in the middle bits (`B')
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The signed argument is represented in excess 2^23; that is, the number
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value is the usigned value minus 2^23.
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The signed argument is represented in excess 2^K; that is, the number
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value is the usigned value minus 2^K.
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The size of each argument is defined in `llims.h'. The usual is an
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instruction with 32 bits, U and S arguments with 26 bits (32-6), B
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argument with 9 bits, and A argument with 17 bits (32-6-9). For small
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instalations, the instruction size can be 16, so U and S have 10 bits,
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and A and B have 5 bits each.
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===========================================================================*/
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#define SIZE_INSTRUCTION 32
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#define SIZE_OP 8
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#define SIZE_U (SIZE_INSTRUCTION-SIZE_OP)
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#define POS_U SIZE_OP
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#define SIZE_S (SIZE_INSTRUCTION-SIZE_OP)
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#define POS_S SIZE_OP
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#define SIZE_B 8
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#define POS_B SIZE_OP
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#define SIZE_A (SIZE_INSTRUCTION-(SIZE_OP+SIZE_B))
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#define POS_A (SIZE_OP+SIZE_B)
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#define EXCESS_S (1<<(SIZE_S-1)) /* == 2^23 */
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#define EXCESS_S (1<<(SIZE_S-1)) /* == 2^K */
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/* creates a mask with `n' 1 bits at position `p' */
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** the following macros help to manipulate instructions
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*/
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#define MAXARG_U ((1<<SIZE_U)-1)
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#define MAXARG_S ((1<<(SIZE_S-1))-1) /* `S' is signed */
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#define MAXARG_A ((1<<SIZE_A)-1)
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#define MAXARG_B ((1<<SIZE_B)-1)
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#define GET_OPCODE(i) ((OpCode)((i)&MASK1(SIZE_OP,0)))
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#define GETARG_U(i) ((int)((i)>>POS_U))
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#define GETARG_S(i) ((int)((i)>>POS_S)-EXCESS_S)
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@ -157,29 +148,4 @@ OP_SETLINE/* U - - LINE=u */
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#define ISJUMP(o) (OP_IFNEQJMP <= (o) && (o) <= OP_JMP)
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#define RFIELDS_PER_FLUSH 32 /* records (SETMAP) */
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#define LFIELDS_PER_FLUSH 64 /* FPF - lists (SETLIST) (<=MAXARG_B) */
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/*
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** we use int to manipulte most arguments, so they must fit
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*/
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#if MAXARG_U > MAX_INT
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#undef MAXARG_U
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#define MAXARG_U MAX_INT
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#endif
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#if MAXARG_S > MAX_INT
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#undef MAXARG_S
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#define MAXARG_S MAX_INT
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#endif
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#if MAXARG_A > MAX_INT
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#undef MAXARG_A
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#define MAXARG_A MAX_INT
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#endif
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#if MAXARG_B > MAX_INT
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#undef MAXARG_B
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#define MAXARG_B MAX_INT
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#endif
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#endif
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13
lparser.c
13
lparser.c
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@ -1,5 +1,5 @@
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/*
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** $Id: lparser.c,v 1.71 2000/03/20 19:15:37 roberto Exp roberto $
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** $Id: lparser.c,v 1.72 2000/03/24 12:17:53 roberto Exp roberto $
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** LL(1) Parser and code generator for Lua
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** See Copyright Notice in lua.h
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*/
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@ -22,17 +22,6 @@
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#include "lstring.h"
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/*
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** check whether arbitrary limits fit into respective opcode types
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*/
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#if MAXLOCALS > MAXARG_U || MAXUPVALUES > MAXARG_B || MAXVARSLH > MAXARG_B || \
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MAXPARAMS > MAXLOCALS || MAXSTACK > MAXARG_A || \
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LFIELDS_PER_FLUSH > MAXARG_B || MULT_RET > MAXARG_B
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#error invalid limits
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#endif
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/*
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** Constructors descriptor:
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** `n' indicates number of elements, and `k' signals whether
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33
lparser.h
33
lparser.h
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@ -1,5 +1,5 @@
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/*
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** $Id: lparser.h,v 1.12 2000/03/10 18:37:44 roberto Exp roberto $
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** $Id: lparser.h,v 1.13 2000/03/13 20:37:16 roberto Exp roberto $
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** LL(1) Parser and code generator for Lua
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** See Copyright Notice in lua.h
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*/
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#include "lzio.h"
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/* maximum number of local variables */
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#ifndef MAXLOCALS
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#define MAXLOCALS 200 /* arbitrary limit (<=MAXARG_B) */
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#endif
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/* maximum number of upvalues */
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#ifndef MAXUPVALUES
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#define MAXUPVALUES 32 /* arbitrary limit (<=MAXARG_B) */
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#endif
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/* maximum number of variables in the left side of an assignment */
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#ifndef MAXVARSLH
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#define MAXVARSLH 100 /* arbitrary limit (<=MAXARG_B) */
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#endif
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/* maximum number of parameters in a function */
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#ifndef MAXPARAMS
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#define MAXPARAMS 100 /* arbitrary limit (<=MAXLOCALS) */
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#endif
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/* maximum stack size in a function */
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#ifndef MAXSTACK
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#define MAXSTACK 256 /* arbitrary limit (<=MAXARG_A) */
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#endif
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/*
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** Expression descriptor
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*/
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