Initial community commit

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Jef 2024-09-24 14:54:57 +02:00
parent 537bcbc862
commit fc06254474
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/*
Nullsoft Expression Evaluator Library (NS-EEL)
Copyright (C) 1999-2003 Nullsoft, Inc.
ns-eel-addfuncs.h: defines macros useful for adding functions to the compiler
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef __NS_EEL_ADDFUNCS_H__
#define __NS_EEL_ADDFUNCS_H__
#ifdef __cplusplus
extern "C" {
#endif
struct _compileContext;
typedef void (*NSEEL_PPPROC)(void *data, int data_size, struct _compileContext *userfunc_data);
void NSEEL_PProc_RAM(void *data, int data_size, struct _compileContext *ctx);
void NSEEL_PProc_THIS(void *data, int data_size, struct _compileContext *ctx);
void _asm_generic3parm(void); // 3 double * parms, returning double *
void _asm_generic3parm_end(void);
void _asm_generic3parm_retd(void); // 3 double * parms, returning double
void _asm_generic3parm_retd_end(void);
void _asm_generic2parm(void); // 2 double * parms, returning double *
void _asm_generic2parm_end(void);
void _asm_generic2parm_retd(void); // 2 double * parms, returning double
void _asm_generic2parm_retd_end(void);
void _asm_generic1parm(void); // 1 double * parms, returning double *
void _asm_generic1parm_end(void);
void _asm_generic1parm_retd(void); // 1 double * parms, returning double
void _asm_generic1parm_retd_end(void);
void _asm_megabuf(void);
void _asm_megabuf_end(void);
#if EEL_F_SIZE == 4
#define EEL_F_SSTR "4"
#define EEL_F_SUFFIX "s"
#else
#define EEL_F_SSTR "8"
#define EEL_F_SUFFIX "l"
#endif
#ifdef _MSC_VER
#define NSEEL_CGEN_CALL __cdecl
#else
#define NSEEL_CGEN_CALL
#endif
#ifdef __cplusplus
};
#endif
#endif//__NS_EEL_ADDFUNCS_H__

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/*
Nullsoft Expression Evaluator Library (NS-EEL)
Copyright (C) 1999-2003 Nullsoft, Inc.
ns-eel-int.h: internal code definition header.
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef __NS_EELINT_H__
#define __NS_EELINT_H__
#ifdef _WIN32
#include <windows.h>
#else
#include "../wdltypes.h"
#endif
#include "ns-eel.h"
#include "ns-eel-addfuncs.h"
#ifdef __cplusplus
extern "C" {
#endif
#define FN_ASSIGN 0
#define FN_MULTIPLY 1
#define FN_DIVIDE 2
#define FN_MODULO 3
#define FN_ADD 4
#define FN_SUB 5
#define FN_AND 6
#define FN_OR 7
#define FN_UMINUS 8
#define FN_UPLUS 9
#define MATH_SIMPLE 0
#define MATH_FN 1
#define YYSTYPE INT_PTR
#define NSEEL_CLOSEFACTOR 0.00001
typedef struct
{
int srcByteCount;
int destByteCount;
} lineRecItem;
typedef struct _compileContext
{
EEL_F **varTable_Values;
char **varTable_Names;
int varTable_numBlocks;
int errVar;
int colCount;
INT_PTR result;
char last_error_string[256];
YYSTYPE yylval;
int yychar; /* the lookahead symbol */
int yynerrs; /* number of parse errors so far */
char yytext[256];
char lastVar[256];
char *llsave[16]; /* Look ahead buffer */
char llbuf[100]; /* work buffer */
char *llp1;// = &llbuf[0]; /* pointer to next avail. in token */
char *llp2;// = &llbuf[0]; /* pointer to end of lookahead */
char *llend;// = &llbuf[0]; /* pointer to end of token */
char *llebuf;// = &llbuf[sizeof llbuf];
int lleof;
int yyline;// = 0;
void *tmpblocks_head,*blocks_head;
int computTableTop; // make it abort on potential overflow =)
int l_stats[4]; // source bytes, static code bytes, call code bytes, data bytes
lineRecItem *compileLineRecs;
int compileLineRecs_size;
int compileLineRecs_alloc;
void *ram_blocks; // this needs to be immediately followed by
int ram_needfree;
void *gram_blocks;
void *caller_this;
}
compileContext;
#define NSEEL_VARS_PER_BLOCK 64
typedef struct {
const char *name;
void *afunc;
void *func_e;
int nParams;
void *replptrs[4];
NSEEL_PPPROC pProc;
} functionType;
extern functionType *nseel_getFunctionFromTable(int idx);
INT_PTR nseel_createCompiledValue(compileContext *ctx, EEL_F value, EEL_F *addrValue);
INT_PTR nseel_createCompiledFunction1(compileContext *ctx, int fntype, INT_PTR fn, INT_PTR code);
INT_PTR nseel_createCompiledFunction2(compileContext *ctx, int fntype, INT_PTR fn, INT_PTR code1, INT_PTR code2);
INT_PTR nseel_createCompiledFunction3(compileContext *ctx, int fntype, INT_PTR fn, INT_PTR code1, INT_PTR code2, INT_PTR code3);
extern EEL_F nseel_globalregs[100];
void nseel_resetVars(compileContext *ctx);
EEL_F *nseel_getVarPtr(compileContext *ctx, char *varName);
EEL_F *nseel_registerVar(compileContext *ctx, char *varName);
INT_PTR *EEL_GLUE_set_immediate(void *_p, void *newv);
// other shat
INT_PTR nseel_setVar(compileContext *ctx, INT_PTR varNum);
INT_PTR nseel_getVar(compileContext *ctx, INT_PTR varNum);
void *nseel_compileExpression(compileContext *ctx, char *txt);
#define VALUE 258
#define IDENTIFIER 259
#define FUNCTION1 260
#define FUNCTION2 261
#define FUNCTION3 262
#define UMINUS 263
#define UPLUS 264
INT_PTR nseel_translate(compileContext *ctx, int type);
void nseel_count(compileContext *ctx);
void nseel_setLastVar(compileContext *ctx);
INT_PTR nseel_lookup(compileContext *ctx, int *typeOfObject);
int nseel_yyerror(compileContext *ctx);
int nseel_yylex(compileContext *ctx, char **exp);
int nseel_yyparse(compileContext *ctx, char *exp);
void nseel_llinit(compileContext *ctx);
int nseel_gettoken(compileContext *ctx, char *lltb, int lltbsiz);
struct lextab {
int llendst; /* Last state number */
char *lldefault; /* Default state table */
char *llnext; /* Next state table */
char *llcheck; /* Check table */
int *llbase; /* Base table */
int llnxtmax; /* Last in next table */
int (*llmove)(); /* Move between states */
char *llfinal; /* Final state descriptions */
int (*llactr)(); /* Action routine */
int *lllook; /* Look ahead vector if != NULL */
char *llign; /* Ignore char vec if != NULL */
char *llbrk; /* Break char vec if != NULL */
char *llill; /* Illegal char vec if != NULL */
};
extern struct lextab nseel_lextab;
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAMAlloc(EEL_F ***blocks, int w);
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAMAllocGMEM(EEL_F ***blocks, int w);
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemSet(EEL_F ***blocks,EEL_F *dest, EEL_F *v, EEL_F *lenptr);
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemFree(EEL_F ***blocks, EEL_F *which);
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemCpy(EEL_F ***blocks,EEL_F *dest, EEL_F *src, EEL_F *lenptr);
#ifndef max
#define max(x,y) ((x)<(y)?(y):(x))
#define min(x,y) ((x)<(y)?(x):(y))
#endif
#ifdef __ppc__
#define EEL_F2int(x) ((int)(x))
#elif defined (_WIN64)
// todo: AMD64 version?
#define EEL_F2int(x) ((int)(x))
#elif defined(_MSC_VER)
static __inline int EEL_F2int(EEL_F d)
{
int tmp;
__asm {
fld d
fistp tmp
}
return tmp;
}
#else
static inline int EEL_F2int(EEL_F d)
{
int tmp;
__asm__ __volatile__ ("fistpl %0" : "=m" (tmp) : "t" (d) : "st") ;
return tmp;
}
#endif
#ifdef __cplusplus
}
#endif
#endif//__NS_EELINT_H__

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/*
Nullsoft Expression Evaluator Library (NS-EEL)
Copyright (C) 1999-2003 Nullsoft, Inc.
ns-eel.h: main application interface header
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef __NS_EEL_H__
#define __NS_EEL_H__
// put standard includes here
#include <stdlib.h>
#include <stdio.h>
#ifdef _MSC_VER
#define strcasecmp stricmp
#define strncasecmp _strnicmp
#endif
#ifndef EEL_F_SIZE
#define EEL_F_SIZE 8
#endif
#if EEL_F_SIZE == 4
typedef float EEL_F;
#else
typedef double EEL_F;
#endif
#ifdef __cplusplus
extern "C" {
#endif
// host should implement these (can be empty stub functions if no VM will execute code in multiple threads at once)
// implement if you will be running the code in same VM from multiple threads,
// or VMs that have the same GRAM pointer from different threads, or multiple
// VMs that have a NULL GRAM pointer from multiple threads.
// if you give each VM it's own unique GRAM and only run each VM in one thread, then you can leave it blank.
// or if you're daring....
void NSEEL_HOSTSTUB_EnterMutex();
void NSEEL_HOSTSTUB_LeaveMutex();
int NSEEL_init(); // returns 0 on success. clears any added functions as well
#define NSEEL_addfunction(name,nparms,code,len) NSEEL_addfunctionex((name),(nparms),(code),(len),0,0)
#define NSEEL_addfunctionex(name,nparms,code,len,pproc,fptr) NSEEL_addfunctionex2((name),(nparms),(code),(len),(pproc),(fptr),0)
void NSEEL_addfunctionex2(const char *name, int nparms, char *code_startaddr, int code_len, void *pproc, void *fptr, void *fptr2);
void NSEEL_quit();
int *NSEEL_getstats(); // returns a pointer to 5 ints... source bytes, static code bytes, call code bytes, data bytes, number of code handles
EEL_F *NSEEL_getglobalregs();
typedef void *NSEEL_VMCTX;
typedef void *NSEEL_CODEHANDLE;
NSEEL_VMCTX NSEEL_VM_alloc(); // return a handle
void NSEEL_VM_free(NSEEL_VMCTX ctx); // free when done with a VM and ALL of its code have been freed, as well
void NSEEL_VM_enumallvars(NSEEL_VMCTX ctx, int (*func)(const char *name, EEL_F *val, void *ctx), void *userctx); // return false from func to stop
void NSEEL_VM_resetvars(NSEEL_VMCTX ctx); // clears all vars to 0.0.
EEL_F *NSEEL_VM_regvar(NSEEL_VMCTX ctx, const char *name); // register a variable (before compilation)
void NSEEL_VM_freeRAM(NSEEL_VMCTX ctx); // clears and frees all (VM) RAM used
void NSEEL_VM_freeRAMIfCodeRequested(NSEEL_VMCTX); // call after code to free the script-requested memory
int NSEEL_VM_wantfreeRAM(NSEEL_VMCTX ctx); // want NSEEL_VM_freeRAMIfCodeRequested?
// if you set this, it uses a local GMEM context.
// Must be set before compilation.
// void *p=NULL;
// NSEEL_VM_SetGRAM(ctx,&p);
// .. do stuff
// NSEEL_VM_FreeGRAM(&p);
void NSEEL_VM_SetGRAM(NSEEL_VMCTX ctx, void **gram);
void NSEEL_VM_FreeGRAM(void **ufd); // frees a gmem context.
void NSEEL_VM_SetCustomFuncThis(NSEEL_VMCTX ctx, void *thisptr);
// note that you shouldnt pass a C string directly, since it may need to
// fudge with the string during the compilation (it will always restore it to the
// original value though).
#ifdef __cplusplus
NSEEL_CODEHANDLE NSEEL_code_compile(NSEEL_VMCTX ctx, char *code, int lineoffs=0);
#else
NSEEL_CODEHANDLE NSEEL_code_compile(NSEEL_VMCTX ctx, char *code, int lineoffs);
#endif
char *NSEEL_code_getcodeerror(NSEEL_VMCTX ctx);
void NSEEL_code_execute(NSEEL_CODEHANDLE code);
void NSEEL_code_free(NSEEL_CODEHANDLE code);
int *NSEEL_code_getstats(NSEEL_CODEHANDLE code); // 4 ints...source bytes, static code bytes, call code bytes, data bytes
// global memory control/view
extern unsigned int NSEEL_RAM_limitmem; // if nonzero, memory limit for user data, in bytes
extern unsigned int NSEEL_RAM_memused;
extern int NSEEL_RAM_memused_errors;
// configuration:
#define NSEEL_MAX_VARIABLE_NAMELEN 16
// define this to override the max variable length (default is 16 bytes)
//#define NSEEL_MAX_TEMPSPACE_ENTRIES 2048
// define this to override the maximum working space in 8 byte units.
// 2048 is the default, and is way more than enough for most applications
// but in theory you might be able to come up with an expression big enough? maybe?
// maximum loop length
#define NSEEL_LOOPFUNC_SUPPORT_MAXLEN 1048576 // scary, we can do a million entries. probably will never want to, though.
#define NSEEL_LOOPFUNC_SUPPORT_MAXLEN_STR "1048576"
// when a VM ctx doesn't have a GRAM context set, make the global one this big
#define NSEEL_SHARED_GRAM_SIZE (1<<20)
// 128*65536 = ~8million entries. (64MB RAM used)
#define NSEEL_RAM_BLOCKS 128
#define NSEEL_RAM_ITEMSPERBLOCK 65536
#ifdef __cplusplus
}
#endif
#endif//__NS_EEL_H__

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/*
Expression Evaluator Library (NS-EEL) v2
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-caltab.c
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel-int.h"
#define VALUE 258
#define IDENTIFIER 259
#define FUNCTION1 260
#define FUNCTION2 261
#define FUNCTION3 262
#define UMINUS 263
#define UPLUS 264
#define YYERROR(x) nseel_yyerror(ctx)
#define YYFINAL 51
#define YYFLAG -32768
#define YYNTBASE 21
#define YYTRANSLATE(x) ((unsigned)(x) <= 264 ? yytranslate[x] : 26)
static const char yytranslate[] = { 0,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 14, 9, 2, 18,
19, 12, 10, 20, 11, 2, 13, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
17, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 8, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 1, 2, 3, 4, 5,
6, 7, 15, 16
};
static const short yyr1[] = { 0,
21, 21, 22, 23, 23, 23, 24, 24, 24, 24,
24, 24, 24, 24, 24, 24, 24, 25, 25, 25
};
static const short yyr2[] = { 0,
1, 3, 1, 1, 1, 3, 1, 3, 3, 3,
3, 3, 3, 3, 2, 2, 1, 4, 6, 8
};
static const short yydefact[] = { 0,
3, 4, 0, 0, 0, 0, 0, 0, 5, 7,
1, 17, 0, 0, 0, 0, 4, 16, 15, 0,
0, 0, 0, 0, 0, 0, 0, 2, 0, 0,
0, 6, 14, 13, 11, 12, 8, 9, 10, 18,
0, 0, 0, 0, 19, 0, 0, 20, 0, 0,
0
};
static const short yydefgoto[] = { 49,
9, 10, 11, 12
};
static const short yypact[] = { 19,
-32768, -11, -7, -5, -4, 38, 38, 38,-32768,-32768,
136,-32768, 38, 38, 38, 38,-32768,-32768,-32768, 88,
38, 38, 38, 38, 38, 38, 38, 136, 100, 49,
62,-32768, 41, 54, -9, -9,-32768,-32768,-32768,-32768,
38, 38, 112, 75,-32768, 38, 124,-32768, 12, 27,
-32768
};
static const short yypgoto[] = {-32768,
-32768,-32768, -6,-32768
};
#define YYLAST 150
static const short yytable[] = { 18,
19, 20, 25, 26, 27, 13, 28, 29, 30, 31,
14, 50, 15, 16, 33, 34, 35, 36, 37, 38,
39, 1, 2, 3, 4, 5, 51, 0, 6, 7,
0, 0, 0, 0, 43, 44, 8, 0, 0, 47,
1, 17, 3, 4, 5, 0, 0, 6, 7, 22,
23, 24, 25, 26, 27, 8, 21, 22, 23, 24,
25, 26, 27, 23, 24, 25, 26, 27, 41, 21,
22, 23, 24, 25, 26, 27, 0, 0, 0, 0,
0, 42, 21, 22, 23, 24, 25, 26, 27, 0,
0, 0, 0, 0, 46, 21, 22, 23, 24, 25,
26, 27, 0, 0, 0, 0, 32, 21, 22, 23,
24, 25, 26, 27, 0, 0, 0, 0, 40, 21,
22, 23, 24, 25, 26, 27, 0, 0, 0, 0,
45, 21, 22, 23, 24, 25, 26, 27, 0, 0,
0, 0, 48, 21, 22, 23, 24, 25, 26, 27
};
static const short yycheck[] = { 6,
7, 8, 12, 13, 14, 17, 13, 14, 15, 16,
18, 0, 18, 18, 21, 22, 23, 24, 25, 26,
27, 3, 4, 5, 6, 7, 0, -1, 10, 11,
-1, -1, -1, -1, 41, 42, 18, -1, -1, 46,
3, 4, 5, 6, 7, -1, -1, 10, 11, 9,
10, 11, 12, 13, 14, 18, 8, 9, 10, 11,
12, 13, 14, 10, 11, 12, 13, 14, 20, 8,
9, 10, 11, 12, 13, 14, -1, -1, -1, -1,
-1, 20, 8, 9, 10, 11, 12, 13, 14, -1,
-1, -1, -1, -1, 20, 8, 9, 10, 11, 12,
13, 14, -1, -1, -1, -1, 19, 8, 9, 10,
11, 12, 13, 14, -1, -1, -1, -1, 19, 8,
9, 10, 11, 12, 13, 14, -1, -1, -1, -1,
19, 8, 9, 10, 11, 12, 13, 14, -1, -1,
-1, -1, 19, 8, 9, 10, 11, 12, 13, 14
};
#define yyerrok (yyerrstatus = 0)
#define yyclearin (ctx->yychar = YYEMPTY)
#define YYEMPTY -2
#define YYEOF 0
#define YYACCEPT return(0)
#define YYABORT return(1)
#define YYTERROR 1
#define YYERRCODE 256
#define YYLEX nseel_yylex(ctx,&exp)
/* If nonreentrant, generate the variables here */
/* YYINITDEPTH indicates the initial size of the parser's stacks */
#define YYINITDEPTH 5000
#define YYMAXDEPTH 5000
/* This is the most reliable way to avoid incompatibilities
in available built-in functions on various systems. */
#define __yy_bcopy(from,to,count) memcpy(to,from,(count)>0?(count):0)
//#ln 131 "bison.simple"
int nseel_yyparse(compileContext *ctx, char *exp)
{
register int yystate;
register int yyn;
register short *yyssp;
register YYSTYPE *yyvsp;
int yyerrstatus; /* number of tokens to shift before error messages enabled */
int yychar1; /* lookahead token as an internal (translated) token number */
short yyssa[YYINITDEPTH]; /* the state stack */
YYSTYPE yyvsa[YYINITDEPTH]; /* the semantic value stack */
short *yyss = yyssa; /* refer to the stacks thru separate pointers */
YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */
int yystacksize = YYINITDEPTH;
YYSTYPE yyval; /* the variable used to return */
/* semantic values from the action */
/* routines */
int yylen;
ctx->yylval = 0;
yystate = 0;
yyerrstatus = 0;
ctx->yynerrs = 0;
ctx->yychar = YYEMPTY; /* Cause a token to be read. */
/* Initialize stack pointers.
Waste one element of value and location stack
so that they stay on the same level as the state stack. */
yyssp = yyss - 1;
yyvsp = yyvs;
/* Push a new state, which is found in yystate . */
/* In all cases, when you get here, the value and location stacks
have just been pushed. so pushing a state here evens the stacks. */
yynewstate:
*++yyssp = yystate;
if (yyssp >= yyss + yystacksize - 1)
{
/* Give user a chance to reallocate the stack */
/* Use copies of these so that the &'s don't force the real ones into memory. */
// YYSTYPE *yyvs1 = yyvs;
// short *yyss1 = yyss;
/* Get the current used size of the three stacks, in elements. */
int size = yyssp - yyss + 1;
if (yystacksize >= YYMAXDEPTH)
{
YYERROR("internal error: parser stack overflow");
return 2;
}
yyssp = yyss + size - 1;
yyvsp = yyvs + size - 1;
if (yyssp >= yyss + yystacksize - 1) YYABORT;
}
// yybackup:
/* Do appropriate processing given the current state. */
/* Read a lookahead token if we need one and don't already have one. */
/* yyresume: */
/* First try to decide what to do without reference to lookahead token. */
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yydefault;
/* Not known => get a lookahead token if don't already have one. */
/* yychar is either YYEMPTY or YYEOF
or a valid token in external form. */
if (ctx->yychar == YYEMPTY)
{
// yyStackSize = yyssp - (yyss - 1);
ctx->yychar = YYLEX;
}
/* Convert token to internal form (in yychar1) for indexing tables with */
if (ctx->yychar <= 0) /* This means end of input. */
{
yychar1 = 0;
ctx->yychar = YYEOF; /* Don't call YYLEX any more */
}
else
{
yychar1 = YYTRANSLATE(ctx->yychar);
}
yyn += yychar1;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
goto yydefault;
yyn = yytable[yyn];
/* yyn is what to do for this token type in this state.
Negative => reduce, -yyn is rule number.
Positive => shift, yyn is new state.
New state is final state => don't bother to shift,
just return success.
0, or most negative number => error. */
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrlab;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrlab;
if (yyn == YYFINAL)
YYACCEPT;
/* Shift the lookahead token. */
/* Discard the token being shifted unless it is eof. */
if (ctx->yychar != YYEOF)
ctx->yychar = YYEMPTY;
*++yyvsp = ctx->yylval;
/* count tokens shifted since error; after three, turn off error status. */
if (yyerrstatus) yyerrstatus--;
yystate = yyn;
goto yynewstate;
/* Do the default action for the current state. */
yydefault:
yyn = yydefact[yystate];
if (yyn == 0)
goto yyerrlab;
/* Do a reduction. yyn is the number of a rule to reduce with. */
yyreduce:
yylen = yyr2[yyn];
yyval = yyvsp[1-yylen]; /* implement default value of the action */
switch (yyn) {
case 1:
//#ln 32 "cal.y"
{ yyval = yyvsp[0]; ctx->result = yyvsp[0]; ;
break;}
case 2:
//#ln 34 "cal.y"
{ {
YYSTYPE i = nseel_setVar(ctx,yyvsp[-2]);
YYSTYPE v=nseel_getVar(ctx,i);
yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_ASSIGN, v, yyvsp[0]);
ctx->result = yyval;
}
;
break;}
case 3:
//#ln 50 "cal.y"
{ yyval = yyvsp[0] ;
break;}
case 4:
//#ln 55 "cal.y"
{ yyval = nseel_getVar(ctx,yyvsp[0]);;
break;}
case 5:
//#ln 57 "cal.y"
{ yyval = yyvsp[0];;
break;}
case 6:
//#ln 59 "cal.y"
{ yyval = yyvsp[-1];;
break;}
case 7:
//#ln 64 "cal.y"
{ yyval = yyvsp[0]; ;
break;}
case 8:
//#ln 66 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_MULTIPLY, yyvsp[-2], yyvsp[0]);
break;}
case 9:
//#ln 72 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_DIVIDE, yyvsp[-2], yyvsp[0]);
break;}
case 10:
//#ln 78 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_MODULO, yyvsp[-2], yyvsp[0]);
break;}
case 11:
//#ln 84 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_ADD, yyvsp[-2], yyvsp[0]);
break;}
case 12:
//#ln 90 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_SUB, yyvsp[-2], yyvsp[0]);
break;}
case 13:
//#ln 96 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_AND, yyvsp[-2], yyvsp[0]);
break;}
case 14:
//#ln 102 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_SIMPLE, FN_OR, yyvsp[-2], yyvsp[0]);
break;}
case 15:
//#ln 108 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_SIMPLE, FN_UMINUS, yyvsp[0]);
break;}
case 16:
//#ln 114 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_SIMPLE, FN_UPLUS, yyvsp[0]);
break;}
case 17:
//#ln 120 "cal.y"
{ yyval = yyvsp[0];
break;}
case 18:
//#ln 125 "cal.y"
{ yyval = nseel_createCompiledFunction1(ctx,MATH_FN, yyvsp[-3], yyvsp[-1]);
break;}
case 19:
//#ln 131 "cal.y"
{ yyval = nseel_createCompiledFunction2(ctx,MATH_FN, yyvsp[-5], yyvsp[-3], yyvsp[-1]);
break;}
case 20:
//#ln 137 "cal.y"
{ yyval = nseel_createCompiledFunction3(ctx,MATH_FN, yyvsp[-7], yyvsp[-5], yyvsp[-3], yyvsp[-1]);
break;}
}
/* the action file gets copied in in place of this dollarsign */
//#ln 362 "bison.simple"
yyvsp -= yylen;
yyssp -= yylen;
*++yyvsp = yyval;
/* Now "shift" the result of the reduction.
Determine what state that goes to,
based on the state we popped back to
and the rule number reduced by. */
yyn = yyr1[yyn];
yystate = yypgoto[yyn - YYNTBASE] + *yyssp;
if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
yystate = yytable[yystate];
else
yystate = yydefgoto[yyn - YYNTBASE];
goto yynewstate;
yyerrlab: /* here on detecting error */
if (! yyerrstatus)
/* If not already recovering from an error, report this error. */
{
++ctx->yynerrs;
#ifdef YYERROR_VERBOSE
yyn = yypact[yystate];
if (yyn > YYFLAG && yyn < YYLAST)
{
int size = 0;
char *msg;
int x, count;
count = 0;
for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
size += strlen(yytname[x]) + 15, count++;
#error this should not compile
msg = (char *) xmalloc(size + 15);
strcpy(msg, "syntax error");
if (count < 5)
{
count = 0;
for (x = 0; x < (sizeof(yytname) / sizeof(char *)); x++)
if (yycheck[x + yyn] == x)
{
strcat(msg, count == 0 ? ", expecting `" : " or `");
strcat(msg, yytname[x]);
strcat(msg, "'");
count++;
}
}
YYERROR(msg);
free(msg);
}
else
#endif /* YYERROR_VERBOSE */
YYERROR("syntax error");
}
//yyerrlab1: /* here on error raised explicitly by an action */
if (yyerrstatus == 3)
{
/* if just tried and failed to reuse lookahead token after an error, discard it. */
/* return failure if at end of input */
if (ctx->yychar == YYEOF) YYABORT;
ctx->yychar = YYEMPTY;
}
/* Else will try to reuse lookahead token
after shifting the error token. */
yyerrstatus = 3; /* Each real token shifted decrements this */
goto yyerrhandle;
yyerrdefault: /* current state does not do anything special for the error token. */
#if 0
/* This is wrong; only states that explicitly want error tokens
should shift them. */
yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/
if (yyn) goto yydefault;
#endif
yyerrpop: /* pop the current state because it cannot handle the error token */
if (yyssp == yyss) YYABORT;
yyvsp--;
yystate = *--yyssp;
yyerrhandle:
yyn = yypact[yystate];
if (yyn == YYFLAG)
goto yyerrdefault;
yyn += YYTERROR;
if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR)
goto yyerrdefault;
yyn = yytable[yyn];
if (yyn < 0)
{
if (yyn == YYFLAG)
goto yyerrpop;
yyn = -yyn;
goto yyreduce;
}
else if (yyn == 0)
goto yyerrpop;
if (yyn == YYFINAL)
YYACCEPT;
*++yyvsp = ctx->yylval;
yystate = yyn;
goto yynewstate;
}

View file

@ -0,0 +1,131 @@
/*
Expression Evaluator Library (NS-EEL) v2
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-cfunc.c: assembly/C implementation of operator/function templates
This file should be ideally compiled with optimizations towards "minimize size"
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel-int.h"
#include <math.h>
#include <stdio.h>
// these are used by our assembly code
#define N 624
#define M 397
#define MATRIX_A 0x9908b0dfUL /* constant vector a */
#define UPPER_MASK 0x80000000UL /* most significant w-r bits */
#define LOWER_MASK 0x7fffffffUL /* least significant r bits */
static unsigned int genrand_int32(void)
{
unsigned int y;
static unsigned int mag01[2]={0x0UL, MATRIX_A};
/* mag01[x] = x * MATRIX_A for x=0,1 */
static unsigned int mt[N]; /* the array for the state vector */
static int mti; /* mti==N+1 means mt[N] is not initialized */
if (!mti)
{
unsigned int s=0x4141f00d;
mt[0]= s & 0xffffffffUL;
for (mti=1; mti<N; mti++)
{
mt[mti] =
(1812433253UL * (mt[mti-1] ^ (mt[mti-1] >> 30)) + mti);
/* See Knuth TAOCP Vol2. 3rd Ed. P.106 for multiplier. */
/* In the previous versions, MSBs of the seed affect */
/* only MSBs of the array mt[]. */
/* 2002/01/09 modified by Makoto Matsumoto */
mt[mti] &= 0xffffffffUL;
/* for >32 bit machines */
}
}
if (mti >= N) { /* generate N words at one time */
int kk;
for (kk=0;kk<N-M;kk++) {
y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
mt[kk] = mt[kk+M] ^ (y >> 1) ^ mag01[y & 0x1UL];
}
for (;kk<N-1;kk++) {
y = (mt[kk]&UPPER_MASK)|(mt[kk+1]&LOWER_MASK);
mt[kk] = mt[kk+(M-N)] ^ (y >> 1) ^ mag01[y & 0x1UL];
}
y = (mt[N-1]&UPPER_MASK)|(mt[0]&LOWER_MASK);
mt[N-1] = mt[M-1] ^ (y >> 1) ^ mag01[y & 0x1UL];
mti = 0;
}
y = mt[mti++];
/* Tempering */
y ^= (y >> 11);
y ^= (y << 7) & 0x9d2c5680UL;
y ^= (y << 15) & 0xefc60000UL;
y ^= (y >> 18);
return y;
}
//---------------------------------------------------------------------------------------------------------------
EEL_F NSEEL_CGEN_CALL nseel_int_rand(EEL_F *f)
{
EEL_F x=floor(*f);
if (x < 1.0) x=1.0;
#ifdef NSEEL_EEL1_COMPAT_MODE
return (EEL_F)(genrand_int32()%(int)x);
#else
return (EEL_F) (genrand_int32()*(1.0/(double)0xFFFFFFFF)*x);
#endif
// return (EEL_F)(rand()%EEL_F2int(x));
}
//---------------------------------------------------------------------------------------------------------------
#ifdef __ppc__
#include "asm-nseel-ppc-gcc.c"
#else
#ifdef _MSC_VER
#ifdef _WIN64
//nasm
#else
#include "asm-nseel-x86-msvc.c"
#endif
#elif !defined(__LP64__)
#include "asm-nseel-x86-gcc.c"
#endif
#endif

File diff suppressed because it is too large Load diff

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@ -0,0 +1,321 @@
/*
Expression Evaluator Library (NS-EEL) v2
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-eval.c
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <string.h>
#include <ctype.h>
#include "ns-eel-int.h"
#define NSEEL_VARS_MALLOC_CHUNKSIZE 8
#define NSEEL_GLOBALVAR_BASE (1<<24)
#ifndef NSEEL_MAX_VARIABLE_NAMELEN
#define NSEEL_MAX_VARIABLE_NAMELEN 8
#endif
#define strnicmp(x,y,z) strncasecmp(x,y,z)
#define INTCONST 1
#define DBLCONST 2
#define HEXCONST 3
#define VARIABLE 4
#define OTHER 5
EEL_F nseel_globalregs[100];
//------------------------------------------------------------------------------
void *nseel_compileExpression(compileContext *ctx, char *exp)
{
ctx->errVar=0;
nseel_llinit(ctx);
if (!nseel_yyparse(ctx,exp) && !ctx->errVar)
{
return (void*)ctx->result;
}
return 0;
}
//------------------------------------------------------------------------------
void nseel_setLastVar(compileContext *ctx)
{
nseel_gettoken(ctx,ctx->lastVar, sizeof(ctx->lastVar));
}
void NSEEL_VM_enumallvars(NSEEL_VMCTX ctx, int (*func)(const char *name, EEL_F *val, void *ctx), void *userctx)
{
compileContext *tctx = (compileContext *) ctx;
int wb;
if (!tctx) return;
for (wb = 0; wb < tctx->varTable_numBlocks; wb ++)
{
int ti;
int namepos=0;
for (ti = 0; ti < NSEEL_VARS_PER_BLOCK; ti ++)
{
char *p=tctx->varTable_Names[wb]+namepos;
if (!*p) break;
if (!func(p,&tctx->varTable_Values[wb][ti],userctx))
break;
namepos += NSEEL_MAX_VARIABLE_NAMELEN;
}
if (ti < NSEEL_VARS_PER_BLOCK)
break;
}
}
static INT_PTR register_var(compileContext *ctx, const char *name, EEL_F **ptr)
{
int wb;
int ti=0;
int i=0;
char *nameptr;
for (wb = 0; wb < ctx->varTable_numBlocks; wb ++)
{
int namepos=0;
for (ti = 0; ti < NSEEL_VARS_PER_BLOCK; ti ++)
{
if (!ctx->varTable_Names[wb][namepos] || !strnicmp(ctx->varTable_Names[wb]+namepos,name,NSEEL_MAX_VARIABLE_NAMELEN))
{
break;
}
namepos += NSEEL_MAX_VARIABLE_NAMELEN;
i++;
}
if (ti < NSEEL_VARS_PER_BLOCK)
break;
}
if (wb == ctx->varTable_numBlocks)
{
ti=0;
// add new block
if (!(ctx->varTable_numBlocks&(NSEEL_VARS_MALLOC_CHUNKSIZE-1)) || !ctx->varTable_Values || !ctx->varTable_Names )
{
ctx->varTable_Values = (EEL_F **)realloc(ctx->varTable_Values,(ctx->varTable_numBlocks+NSEEL_VARS_MALLOC_CHUNKSIZE) * sizeof(EEL_F *));
ctx->varTable_Names = (char **)realloc(ctx->varTable_Names,(ctx->varTable_numBlocks+NSEEL_VARS_MALLOC_CHUNKSIZE) * sizeof(char *));
}
ctx->varTable_numBlocks++;
ctx->varTable_Values[wb] = (EEL_F *)calloc(sizeof(EEL_F),NSEEL_VARS_PER_BLOCK);
ctx->varTable_Names[wb] = (char *)calloc(NSEEL_MAX_VARIABLE_NAMELEN,NSEEL_VARS_PER_BLOCK);
}
nameptr=ctx->varTable_Names[wb]+ti*NSEEL_MAX_VARIABLE_NAMELEN;
if (!nameptr[0])
{
strncpy(nameptr,name,NSEEL_MAX_VARIABLE_NAMELEN);
}
if (ptr) *ptr = ctx->varTable_Values[wb] + ti;
return i;
}
//------------------------------------------------------------------------------
INT_PTR nseel_setVar(compileContext *ctx, INT_PTR varNum)
{
if (varNum < 0) // adding new var
{
char *var=ctx->lastVar;
if (!strnicmp(var,"reg",3) && strlen(var) == 5 && isdigit(var[3]) && isdigit(var[4]))
{
int i,x=atoi(var+3);
if (x < 0 || x > 99) x=0;
i=NSEEL_GLOBALVAR_BASE+x;
return i;
}
return register_var(ctx,ctx->lastVar,NULL);
}
// setting/getting oldvar
if (varNum >= NSEEL_GLOBALVAR_BASE && varNum < NSEEL_GLOBALVAR_BASE+100)
{
return varNum;
}
{
int wb,ti;
char *nameptr;
if (varNum < 0 || varNum >= ctx->varTable_numBlocks*NSEEL_VARS_PER_BLOCK) return -1;
wb=varNum/NSEEL_VARS_PER_BLOCK;
ti=(varNum%NSEEL_VARS_PER_BLOCK);
nameptr=ctx->varTable_Names[wb]+ti*NSEEL_MAX_VARIABLE_NAMELEN;
if (!nameptr[0])
{
strncpy(nameptr,ctx->lastVar,NSEEL_MAX_VARIABLE_NAMELEN);
}
return varNum;
}
}
//------------------------------------------------------------------------------
INT_PTR nseel_getVar(compileContext *ctx, INT_PTR i)
{
if (i >= 0 && i < (NSEEL_VARS_PER_BLOCK*ctx->varTable_numBlocks))
return nseel_createCompiledValue(ctx,0, ctx->varTable_Values[i/NSEEL_VARS_PER_BLOCK] + i%NSEEL_VARS_PER_BLOCK);
if (i >= NSEEL_GLOBALVAR_BASE && i < NSEEL_GLOBALVAR_BASE+100)
return nseel_createCompiledValue(ctx,0, nseel_globalregs+i-NSEEL_GLOBALVAR_BASE);
return nseel_createCompiledValue(ctx,0, NULL);
}
//------------------------------------------------------------------------------
EEL_F *NSEEL_VM_regvar(NSEEL_VMCTX _ctx, const char *var)
{
compileContext *ctx = (compileContext *)_ctx;
EEL_F *r;
if (!ctx) return 0;
if (!strnicmp(var,"reg",3) && strlen(var) == 5 && isdigit(var[3]) && isdigit(var[4]))
{
int x=atoi(var+3);
if (x < 0 || x > 99) x=0;
return nseel_globalregs + x;
}
register_var(ctx,var,&r);
return r;
}
//------------------------------------------------------------------------------
INT_PTR nseel_translate(compileContext *ctx, int type)
{
int v;
int n;
*ctx->yytext = 0;
nseel_gettoken(ctx,ctx->yytext, sizeof(ctx->yytext));
switch (type)
{
case INTCONST: return nseel_createCompiledValue(ctx,(EEL_F)atoi(ctx->yytext), NULL);
case DBLCONST: return nseel_createCompiledValue(ctx,(EEL_F)atof(ctx->yytext), NULL);
case HEXCONST:
v=0;
n=0;
while (1)
{
int a=ctx->yytext[n++];
if (a >= '0' && a <= '9') v=(v<<4)+a-'0';
else if (a >= 'A' && a <= 'F') v=(v<<4)+10+a-'A';
else if (a >= 'a' && a <= 'f') v=(v<<4)+10+a-'a';
else break;
}
return nseel_createCompiledValue(ctx,(EEL_F)v, NULL);
}
return 0;
}
//------------------------------------------------------------------------------
INT_PTR nseel_lookup(compileContext *ctx, int *typeOfObject)
{
int i, ti, wb;
const char *nptr;
nseel_gettoken(ctx,ctx->yytext, sizeof(ctx->yytext));
if (!strnicmp(ctx->yytext,"reg",3) && strlen(ctx->yytext) == 5 && isdigit(ctx->yytext[3]) && isdigit(ctx->yytext[4]) && (i=atoi(ctx->yytext+3))>=0 && i<100)
{
*typeOfObject=IDENTIFIER;
return i+NSEEL_GLOBALVAR_BASE;
}
i=0;
for (wb = 0; wb < ctx->varTable_numBlocks; wb ++)
{
int namepos=0;
for (ti = 0; ti < NSEEL_VARS_PER_BLOCK; ti ++)
{
if (!ctx->varTable_Names[wb][namepos]) break;
if (!strnicmp(ctx->varTable_Names[wb]+namepos,ctx->yytext,NSEEL_MAX_VARIABLE_NAMELEN))
{
*typeOfObject = IDENTIFIER;
return i;
}
namepos += NSEEL_MAX_VARIABLE_NAMELEN;
i++;
}
if (ti < NSEEL_VARS_PER_BLOCK) break;
}
nptr = ctx->yytext;
if (!strcasecmp(nptr,"if")) nptr="_if";
else if (!strcasecmp(nptr,"bnot")) nptr="_not";
else if (!strcasecmp(nptr,"assign")) nptr="_set";
else if (!strcasecmp(nptr,"equal")) nptr="_equal";
else if (!strcasecmp(nptr,"below")) nptr="_below";
else if (!strcasecmp(nptr,"above")) nptr="_above";
else if (!strcasecmp(nptr,"megabuf")) nptr="_mem";
else if (!strcasecmp(nptr,"gmegabuf")) nptr="_gmem";
else if (!strcasecmp(nptr,"int")) nptr="floor";
for (i=0;nseel_getFunctionFromTable(i);i++)
{
functionType *f=nseel_getFunctionFromTable(i);
if (!strcasecmp(f->name, nptr))
{
switch (f->nParams)
{
case 1: *typeOfObject = FUNCTION1; break;
case 2: *typeOfObject = FUNCTION2; break;
case 3: *typeOfObject = FUNCTION3; break;
default: *typeOfObject = IDENTIFIER; break;
}
return i;
}
}
*typeOfObject = IDENTIFIER;
nseel_setLastVar(ctx);
return nseel_setVar(ctx,-1);
}
//---------------------------------------------------------------------------
void nseel_count(compileContext *ctx)
{
nseel_gettoken(ctx,ctx->yytext, sizeof(ctx->yytext));
ctx->colCount+=strlen(ctx->yytext);
}
//---------------------------------------------------------------------------
int nseel_yyerror(compileContext *ctx)
{
ctx->errVar = ctx->colCount;
return 0;
}

View file

@ -0,0 +1,277 @@
/*
Expression Evaluator Library (NS-EEL) v2
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-lextab.c
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel-int.h"
#define LEXSKIP (-1)
static int _lmovb(struct lextab *lp, int c, int st)
{
int base;
while ((base = lp->llbase[st]+c) > lp->llnxtmax ||
(lp->llcheck[base] & 0377) != st) {
if (st != lp->llendst) {
base = lp->lldefault[st] & 0377;
st = base;
}
else
return(-1);
}
return(lp->llnext[base]&0377);
}
#define INTCONST 1
#define DBLCONST 2
#define HEXCONST 3
#define VARIABLE 4
#define OTHER 5
static int _Alextab(compileContext *ctx, int __na__)
{
// fucko: JF> 17 -> 19?
if (__na__ >= 0 && __na__ <= 17)
nseel_count(ctx);
switch (__na__)
{
case 0:
*ctx->yytext = 0;
nseel_gettoken(ctx,ctx->yytext, sizeof(ctx->yytext));
if (ctx->yytext[0] < '0' || ctx->yytext[0] > '9') // not really a hex value, lame
{
nseel_setLastVar(ctx); ctx->yylval = nseel_lookup(ctx,&__na__); return __na__;
}
ctx->yylval = nseel_translate(ctx,HEXCONST);
return VALUE;
case 1: ctx->yylval = nseel_translate(ctx,INTCONST); return VALUE;
case 2: ctx->yylval = nseel_translate(ctx,INTCONST); return VALUE;
case 3: ctx->yylval = nseel_translate(ctx,DBLCONST); return VALUE;
case 4:
case 5: nseel_setLastVar(ctx); ctx->yylval = nseel_lookup(ctx,&__na__); return __na__;
case 6: return '+';
case 7: return '-';
case 8: return '*';
case 9: return '/';
case 10: return '%';
case 11: return '&';
case 12: return '|';
case 13: return '(';
case 14: return ')';
case 15: return '=';
case 16: return ',';
case 17: return ';';
}
return (LEXSKIP);
}
static char _Flextab[] =
{
1, 18, 17, 16, 15, 14, 13, 12,
11, 10, 9, 8, 7, 6, 4, 5,
5, 4, 4, 3, 3, 3, 3, 4,
0, 4, 5, 0, 5, 4, 1, 3,
0, 2, -1, 1, -1,
};
static char _Nlextab[] =
{
36, 36, 36, 36, 36, 36, 36, 36,
36, 1, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
1, 36, 36, 36, 36, 9, 8, 36,
6, 5, 11, 13, 3, 12, 19, 10,
30, 30, 30, 30, 30, 30, 30, 30,
30, 30, 36, 2, 36, 4, 36, 36,
36, 29, 29, 29, 29, 29, 29, 18,
18, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 36, 36, 36, 36, 18,
36, 29, 29, 29, 29, 29, 23, 18,
18, 18, 18, 18, 18, 18, 18, 18,
18, 18, 18, 18, 18, 18, 14, 18,
18, 18, 18, 36, 7, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 36,
36, 36, 36, 36, 36, 36, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
36, 36, 36, 36, 17, 36, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17, 17, 17, 17, 17, 17,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 36, 36, 36, 36, 36, 36,
36, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 36, 36, 36, 36, 16,
36, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 22, 22, 22, 22, 22,
22, 22, 22, 22, 22, 21, 21, 21,
21, 21, 21, 21, 21, 21, 21, 36,
20, 26, 26, 26, 26, 26, 26, 26,
26, 26, 26, 36, 36, 36, 36, 36,
36, 36, 25, 25, 25, 25, 25, 25,
36, 24, 36, 36, 36, 36, 36, 36,
20, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 25, 25, 25, 25, 25, 25,
36, 24, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, 36, 36, 36, 36,
36, 36, 36, 28, 28, 28, 28, 28,
28, 36, 27, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 28, 28, 28, 28, 28,
28, 31, 27, 35, 35, 35, 35, 35,
35, 35, 35, 35, 35, 36, 36, 36,
36, 36, 36, 36, 34, 34, 34, 33,
34, 34, 36, 32, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 34, 34, 34, 33,
34, 34, 36, 32, 34, 34, 34, 34,
34, 34, 34, 34, 34, 34, 36, 36,
36, 36, 36, 36, 36, 34, 34, 34,
34, 34, 34, 36, 32, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 34, 34, 34,
34, 34, 34, 36, 32,
};
static char _Clextab[] =
{
-1, -1, -1, -1, -1, -1, -1, -1,
-1, 0, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
0, -1, -1, -1, -1, 0, 0, -1,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, -1, 0, -1, 0, -1, -1,
-1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, -1, -1, -1, -1, 0,
-1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, -1, 0, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, -1,
-1, -1, -1, -1, -1, -1, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
-1, -1, -1, -1, 14, -1, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, -1, -1, -1, -1, -1, -1,
-1, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, -1, -1, -1, -1, 15,
-1, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 19, 19, 19, 19, 19,
19, 19, 19, 19, 19, 20, 20, 20,
20, 20, 20, 20, 20, 20, 20, -1,
19, 23, 23, 23, 23, 23, 23, 23,
23, 23, 23, -1, -1, -1, -1, -1,
-1, -1, 23, 23, 23, 23, 23, 23,
-1, 23, -1, -1, -1, -1, -1, -1,
19, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, 23, 23, 23, 23, 23, 23,
-1, 23, 26, 26, 26, 26, 26, 26,
26, 26, 26, 26, -1, -1, -1, -1,
-1, -1, -1, 26, 26, 26, 26, 26,
26, -1, 26, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, 26, 26, 26, 26, 26,
26, 30, 26, 30, 30, 30, 30, 30,
30, 30, 30, 30, 30, -1, -1, -1,
-1, -1, -1, -1, 30, 30, 30, 30,
30, 30, -1, 30, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, 30, 30, 30, 30,
30, 30, -1, 30, 33, 33, 33, 33,
33, 33, 33, 33, 33, 33, -1, -1,
-1, -1, -1, -1, -1, 33, 33, 33,
33, 33, 33, -1, 33, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, 33, 33, 33,
33, 33, 33, -1, 33,
};
static char _Dlextab[] =
{
36, 36, 36, 36, 36, 36, 36, 36,
36, 36, 36, 36, 36, 36, 36, 36,
15, 14, 14, 36, 36, 20, 19, 14,
14, 23, 15, 15, 26, 23, 36, 19,
36, 36, 33, 30,
};
static int _Blextab[] =
{
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 77, 152,
0, 0, 0, 227, 237, 0, 0, 249,
0, 0, 306, 0, 0, 0, 363, 0,
0, 420, 0, 0, 0,
};
struct lextab nseel_lextab = {
36,
_Dlextab,
_Nlextab,
_Clextab,
_Blextab,
524,
_lmovb,
_Flextab,
_Alextab,
0,
0,
0,
0,
};

View file

@ -0,0 +1,320 @@
/*
Expression Evaluator Library (NS-EEL) v2
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel.h"
#include "ns-eel-int.h"
#include <math.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#ifdef _WIN32
#include <malloc.h>
#endif
unsigned int NSEEL_RAM_limitmem=0;
unsigned int NSEEL_RAM_memused=0;
int NSEEL_RAM_memused_errors=0;
int NSEEL_VM_wantfreeRAM(NSEEL_VMCTX ctx)
{
if (ctx)
{
compileContext *c=(compileContext*)ctx;
if (c->ram_needfree)
return 1;
}
return 0;
}
void NSEEL_VM_freeRAMIfCodeRequested(NSEEL_VMCTX ctx) // check to see if our free flag was set
{
if (ctx)
{
compileContext *c=(compileContext*)ctx;
if (c->ram_needfree)
{
NSEEL_HOSTSTUB_EnterMutex();
if (c->ram_blocks)
{
INT_PTR startpos=((INT_PTR)c->ram_needfree)-1;
EEL_F **blocks = (EEL_F **)c->ram_blocks;
INT_PTR pos=0;
int x;
for (x = 0; x < NSEEL_RAM_BLOCKS; x ++)
{
if (pos >= startpos)
{
if (blocks[x])
{
if (NSEEL_RAM_memused >= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK)
NSEEL_RAM_memused -= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK;
else NSEEL_RAM_memused_errors++;
}
free(blocks[x]);
blocks[x]=0;
}
pos+=NSEEL_RAM_ITEMSPERBLOCK;
}
if (!startpos)
{
free(blocks);
c->ram_blocks=0;
}
}
c->ram_needfree=0;
NSEEL_HOSTSTUB_LeaveMutex();
}
}
}
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAMAllocGMEM(EEL_F ***blocks, int w)
{
static EEL_F * volatile gmembuf;
if (blocks) return __NSEEL_RAMAlloc(blocks,w);
if (!gmembuf)
{
NSEEL_HOSTSTUB_EnterMutex();
if (!gmembuf) gmembuf=(EEL_F*)calloc(sizeof(EEL_F),NSEEL_SHARED_GRAM_SIZE);
NSEEL_HOSTSTUB_LeaveMutex();
if (!gmembuf) return 0;
}
return gmembuf+(((unsigned int)w)&((NSEEL_SHARED_GRAM_SIZE)-1));
}
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAMAlloc(EEL_F ***blocks, int w)
{
int whichblock;
EEL_F **pblocks=*blocks;
int is_locked=0;
if (!pblocks)
{
if (!is_locked) { is_locked=1; NSEEL_HOSTSTUB_EnterMutex(); }
if (!(pblocks=*blocks))
{
pblocks = *blocks = (EEL_F **)calloc(sizeof(EEL_F *),NSEEL_RAM_BLOCKS);
if (!pblocks) {
if (is_locked) NSEEL_HOSTSTUB_LeaveMutex();
return 0;
}
}
}
// fprintf(stderr,"got request at %d, %d\n",w/NSEEL_RAM_ITEMSPERBLOCK, w&(NSEEL_RAM_ITEMSPERBLOCK-1));
if (w >= 0 && (whichblock = w/NSEEL_RAM_ITEMSPERBLOCK) < NSEEL_RAM_BLOCKS)
{
EEL_F *p=pblocks[whichblock];
if (!p)
{
if (!is_locked) { is_locked=1; NSEEL_HOSTSTUB_EnterMutex(); }
if (!(p=pblocks[whichblock]))
{
const int msize=sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK;
if (!NSEEL_RAM_limitmem || NSEEL_RAM_memused+msize < NSEEL_RAM_limitmem)
{
p=pblocks[whichblock]=(EEL_F *)calloc(sizeof(EEL_F),NSEEL_RAM_ITEMSPERBLOCK);
if (p) NSEEL_RAM_memused+=msize;
}
if (!p) w=0;
}
}
if (is_locked) NSEEL_HOSTSTUB_LeaveMutex();
return p + (w&(NSEEL_RAM_ITEMSPERBLOCK-1));
}
if (is_locked) NSEEL_HOSTSTUB_LeaveMutex();
// fprintf(stderr,"ret 0\n");
return 0;
}
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemFree(EEL_F ***blocks, EEL_F *which)
{
int d=EEL_F2int(*which);
if (d < 0) d=0;
if (d < NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK) ((INT_PTR *)blocks)[1]=1+d;
return which;
}
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemCpy(EEL_F ***blocks,EEL_F *dest, EEL_F *src, EEL_F *lenptr)
{
int dest_offs = EEL_F2int(*dest + 0.0001);
int src_offs = EEL_F2int(*src + 0.0001);
int len = EEL_F2int(*lenptr + 0.0001);
// trim to front
if (src_offs<0)
{
len += src_offs;
dest_offs -= src_offs;
src_offs=0;
}
if (dest_offs<0)
{
len += dest_offs;
src_offs -= dest_offs;
dest_offs=0;
}
while (len > 0)
{
EEL_F *srcptr,*destptr;
int copy_len = len;
int maxdlen=NSEEL_RAM_ITEMSPERBLOCK - (dest_offs&(NSEEL_RAM_ITEMSPERBLOCK-1));
int maxslen=NSEEL_RAM_ITEMSPERBLOCK - (src_offs&(NSEEL_RAM_ITEMSPERBLOCK-1));
if (dest_offs >= NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK ||
src_offs >= NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK) break;
if (copy_len > maxdlen) copy_len=maxdlen;
if (copy_len > maxslen) copy_len=maxslen;
if (copy_len<1) break;
srcptr = __NSEEL_RAMAlloc(blocks,src_offs);
destptr = __NSEEL_RAMAlloc(blocks,dest_offs);
if (!srcptr || !destptr) break;
memmove(destptr,srcptr,sizeof(EEL_F)*copy_len);
src_offs+=copy_len;
dest_offs+=copy_len;
len-=copy_len;
}
return dest;
}
EEL_F * NSEEL_CGEN_CALL __NSEEL_RAM_MemSet(EEL_F ***blocks,EEL_F *dest, EEL_F *v, EEL_F *lenptr)
{
int offs = EEL_F2int(*dest + 0.0001);
int len = EEL_F2int(*lenptr + 0.0001);
EEL_F t;
if (offs<0)
{
len += offs;
offs=0;
}
if (offs >= NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK) return dest;
if (offs+len > NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK) len = NSEEL_RAM_BLOCKS*NSEEL_RAM_ITEMSPERBLOCK - offs;
if (len < 1) return dest;
t=*v; // set value
// int lastBlock=-1;
while (len > 0)
{
int lcnt;
EEL_F *ptr=__NSEEL_RAMAlloc(blocks,offs);
if (!ptr) break;
lcnt=NSEEL_RAM_ITEMSPERBLOCK-(offs&(NSEEL_RAM_ITEMSPERBLOCK-1));
if (lcnt > len) lcnt=len;
len -= lcnt;
offs += lcnt;
while (lcnt--)
{
*ptr++=t;
}
}
return dest;
}
void NSEEL_VM_SetGRAM(NSEEL_VMCTX ctx, void **gram)
{
if (ctx)
{
compileContext *c=(compileContext*)ctx;
c->gram_blocks = gram;
}
}
void NSEEL_VM_freeRAM(NSEEL_VMCTX ctx)
{
if (ctx)
{
int x;
compileContext *c=(compileContext*)ctx;
if (c->ram_blocks)
{
EEL_F **blocks = (EEL_F **)c->ram_blocks;
for (x = 0; x < NSEEL_RAM_BLOCKS; x ++)
{
if (blocks[x])
{
if (NSEEL_RAM_memused >= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK)
NSEEL_RAM_memused -= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK;
else NSEEL_RAM_memused_errors++;
}
free(blocks[x]);
blocks[x]=0;
}
free(blocks);
c->ram_blocks=0;
}
c->ram_needfree=0; // no need to free anymore
}
}
void NSEEL_VM_FreeGRAM(void **ufd)
{
if (ufd[0])
{
EEL_F **blocks = (EEL_F **)ufd[0];
int x;
for (x = 0; x < NSEEL_RAM_BLOCKS; x ++)
{
if (blocks[x])
{
if (NSEEL_RAM_memused >= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK)
NSEEL_RAM_memused -= sizeof(EEL_F) * NSEEL_RAM_ITEMSPERBLOCK;
else NSEEL_RAM_memused_errors++;
}
free(blocks[x]);
blocks[x]=0;
}
free(blocks);
ufd[0]=0;
}
}

View file

@ -0,0 +1,163 @@
/*
Expression Evaluator Library (NS-EEL)
Copyright (C) 2004-2008 Cockos Incorporated
Copyright (C) 1999-2003 Nullsoft, Inc.
nseel-yylex.c
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "ns-eel-int.h"
#define NBPW 16
#define EOF (-1)
#define YYERRORVAL 256 /* yacc's value */
static int llset(compileContext *ctx);
static int llinp(compileContext *ctx, char **exp);
static int lexgetc(char **exp)
{
char c= **exp;
if (c) (*exp)++;
return( c != 0 ? c : -1);
}
static int tst__b(register int c, char tab[])
{
return (tab[(c >> 3) & 037] & (1 << (c & 07)) );
}
int nseel_gettoken(compileContext *ctx, char *lltb, int lltbsiz)
{
register char *lp, *tp, *ep;
tp = lltb;
ep = tp+lltbsiz-1;
for (lp = ctx->llbuf; lp < ctx->llend && tp < ep;)
*tp++ = *lp++;
*tp = 0;
return(tp-lltb);
}
int nseel_yylex(compileContext *ctx, char **exp)
{
register int c, st;
int final, l, llk, i;
register struct lextab *lp;
char *cp;
while (1)
{
llk = 0;
if (llset(ctx)) return(0);
st = 0;
final = -1;
lp = &nseel_lextab;
do {
if (lp->lllook && (l = lp->lllook[st])) {
for (c=0; c<NBPW; c++)
if (l&(1<<c))
ctx->llsave[c] = ctx->llp1;
llk++;
}
if ((i = lp->llfinal[st]) != -1) {
final = i;
ctx->llend = ctx->llp1;
}
if ((c = llinp(ctx,exp)) < 0)
break;
if ((cp = lp->llbrk) && llk==0 && tst__b(c, cp)) {
ctx->llp1--;
break;
}
} while ((st = (*lp->llmove)(lp, c, st)) != -1);
if (ctx->llp2 < ctx->llp1)
ctx->llp2 = ctx->llp1;
if (final == -1) {
ctx->llend = ctx->llp1;
if (st == 0 && c < 0)
return(0);
if ((cp = lp->llill) && tst__b(c, cp)) {
continue;
}
return(YYERRORVAL);
}
if ((c = (final >> 11) & 037))
ctx->llend = ctx->llsave[c-1];
if ((c = (*lp->llactr)(ctx,final&03777)) >= 0)
return(c);
}
}
void nseel_llinit(compileContext *ctx)
{
ctx->llp1 = ctx->llp2 = ctx->llend = ctx->llbuf;
ctx->llebuf = ctx->llbuf + sizeof(ctx->llbuf);
ctx->lleof = ctx->yyline = 0;
}
static int llinp(compileContext *ctx, char **exp)
{
register int c;
register struct lextab *lp;
register char *cp;
lp = &nseel_lextab;
cp = lp->llign; /* Ignore class */
for (;;) {
/*
* Get the next character from the save buffer (if possible)
* If the save buffer's empty, then return EOF or the next
* input character. Ignore the character if it's in the
* ignore class.
*/
c = (ctx->llp1 < ctx->llp2) ? *ctx->llp1 & 0377 : (ctx->lleof) ? EOF : lexgetc(exp);
if (c >= 0) { /* Got a character? */
if (cp && tst__b(c, cp))
continue; /* Ignore it */
if (ctx->llp1 >= ctx->llebuf) { /* No, is there room? */
return -1;
}
*ctx->llp1++ = c; /* Store in token buff */
} else
ctx->lleof = 1; /* Set EOF signal */
return(c);
}
}
static int llset(compileContext *ctx)
/*
* Return TRUE if EOF and nothing was moved in the look-ahead buffer
*/
{
register char *lp1, *lp2;
for (lp1 = ctx->llbuf, lp2 = ctx->llend; lp2 < ctx->llp2;)
*lp1++ = *lp2++;
ctx->llend = ctx->llp1 = ctx->llbuf;
ctx->llp2 = lp1;
return(ctx->lleof && lp1 == ctx->llbuf);
}