266 lines
6.6 KiB
C
Executable File
266 lines
6.6 KiB
C
Executable File
#ifndef jsi_h
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#define jsi_h
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#include "mujs.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdarg.h>
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#include <string.h>
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#include <setjmp.h>
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#include <math.h>
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#include <float.h>
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#include <limits.h>
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/* Microsoft Visual C */
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#ifdef _MSC_VER
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#pragma warning(disable:4996) /* _CRT_SECURE_NO_WARNINGS */
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#pragma warning(disable:4244) /* implicit conversion from double to int */
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#pragma warning(disable:4267) /* implicit conversion of int to smaller int */
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#define inline __inline
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#if _MSC_VER < 1900 /* MSVC 2015 */
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#define snprintf jsW_snprintf
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#define vsnprintf jsW_vsnprintf
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static int jsW_vsnprintf(char *str, size_t size, const char *fmt, va_list ap)
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{
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int n;
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n = _vsnprintf(str, size, fmt, ap);
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str[size-1] = 0;
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return n;
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}
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static int jsW_snprintf(char *str, size_t size, const char *fmt, ...)
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{
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int n;
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va_list ap;
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va_start(ap, fmt);
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n = jsW_vsnprintf(str, size, fmt, ap);
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va_end(ap);
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return n;
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}
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#endif
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#if _MSC_VER <= 1700 /* <= MSVC 2012 */
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#define isnan(x) _isnan(x)
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#define isinf(x) (!_finite(x))
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#define isfinite(x) _finite(x)
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static __inline int signbit(double x) { __int64 i; memcpy(&i, &x, 8); return i>>63; }
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#define INFINITY (DBL_MAX+DBL_MAX)
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#define NAN (INFINITY-INFINITY)
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#endif
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#endif
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#define soffsetof(x,y) ((int)offsetof(x,y))
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#define nelem(a) (int)(sizeof (a) / sizeof (a)[0])
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void *js_malloc(js_State *J, int size);
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void *js_realloc(js_State *J, void *ptr, int size);
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void js_free(js_State *J, void *ptr);
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typedef struct js_Regexp js_Regexp;
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typedef struct js_Value js_Value;
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typedef struct js_Object js_Object;
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typedef struct js_String js_String;
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typedef struct js_Ast js_Ast;
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typedef struct js_Function js_Function;
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typedef struct js_Environment js_Environment;
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typedef struct js_StringNode js_StringNode;
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typedef struct js_Jumpbuf js_Jumpbuf;
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typedef struct js_StackTrace js_StackTrace;
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/* Limits */
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#ifndef JS_STACKSIZE
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#define JS_STACKSIZE 256 /* value stack size */
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#endif
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#ifndef JS_ENVLIMIT
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#define JS_ENVLIMIT 128 /* environment stack size */
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#endif
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#ifndef JS_TRYLIMIT
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#define JS_TRYLIMIT 64 /* exception stack size */
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#endif
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#ifndef JS_GCFACTOR
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/*
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* GC will try to trigger when memory usage is this value times the minimum
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* needed memory. E.g. if there are 100 remaining objects after GC and this
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* value is 5.0, then the next GC will trigger when the overall number is 500.
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* I.e. a value of 5.0 aims at 80% garbage, 20% remain-used on each GC.
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* The bigger the value the less impact GC has on overall performance, but more
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* memory is used and individual GC pauses are longer (but fewer).
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*/
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#define JS_GCFACTOR 5.0 /* memory overhead factor >= 1.0 */
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#endif
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#ifndef JS_ASTLIMIT
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#define JS_ASTLIMIT 100 /* max nested expressions */
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#endif
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/* instruction size -- change to int if you get integer overflow syntax errors */
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#ifdef JS_INSTRUCTION
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typedef JS_INSTRUCTION js_Instruction;
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#else
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typedef unsigned short js_Instruction;
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#endif
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/* String interning */
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char *js_strdup(js_State *J, const char *s);
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const char *js_intern(js_State *J, const char *s);
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void jsS_dumpstrings(js_State *J);
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void jsS_freestrings(js_State *J);
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/* Portable strtod and printf float formatting */
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void js_fmtexp(char *p, int e);
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int js_grisu2(double v, char *buffer, int *K);
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double js_strtod(const char *as, char **aas);
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/* Private stack functions */
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void js_newarguments(js_State *J);
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void js_newfunction(js_State *J, js_Function *function, js_Environment *scope);
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void js_newscript(js_State *J, js_Function *fun, js_Environment *scope, int type);
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void js_loadeval(js_State *J, const char *filename, const char *source);
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js_Regexp *js_toregexp(js_State *J, int idx);
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int js_isarrayindex(js_State *J, const char *str, int *idx);
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int js_runeat(js_State *J, const char *s, int i);
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int js_utfptrtoidx(const char *s, const char *p);
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const char *js_utfidxtoptr(const char *s, int i);
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void js_dup(js_State *J);
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void js_dup2(js_State *J);
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void js_rot2(js_State *J);
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void js_rot3(js_State *J);
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void js_rot4(js_State *J);
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void js_rot2pop1(js_State *J);
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void js_rot3pop2(js_State *J);
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void js_dup1rot3(js_State *J);
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void js_dup1rot4(js_State *J);
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void js_RegExp_prototype_exec(js_State *J, js_Regexp *re, const char *text);
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void js_trap(js_State *J, int pc); /* dump stack and environment to stdout */
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struct js_StackTrace
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{
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const char *name;
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const char *file;
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int line;
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};
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/* Exception handling */
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struct js_Jumpbuf
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{
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jmp_buf buf;
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js_Environment *E;
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int envtop;
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int tracetop;
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int top, bot;
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int strict;
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js_Instruction *pc;
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};
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void *js_savetrypc(js_State *J, js_Instruction *pc);
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#define js_trypc(J, PC) \
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setjmp(js_savetrypc(J, PC))
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/* String buffer */
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typedef struct js_Buffer { int n, m; char s[64]; } js_Buffer;
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void js_putc(js_State *J, js_Buffer **sbp, int c);
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void js_puts(js_State *J, js_Buffer **sb, const char *s);
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void js_putm(js_State *J, js_Buffer **sb, const char *s, const char *e);
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/* State struct */
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struct js_State
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{
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void *actx;
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void *uctx;
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js_Alloc alloc;
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js_Report report;
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js_Panic panic;
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js_StringNode *strings;
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int default_strict;
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int strict;
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/* parser input source */
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const char *filename;
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const char *source;
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int line;
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/* lexer state */
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struct { char *text; int len, cap; } lexbuf;
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int lexline;
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int lexchar;
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int lasttoken;
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int newline;
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/* parser state */
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int astdepth;
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int lookahead;
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const char *text;
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double number;
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js_Ast *gcast; /* list of allocated nodes to free after parsing */
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/* runtime environment */
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js_Object *Object_prototype;
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js_Object *Array_prototype;
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js_Object *Function_prototype;
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js_Object *Boolean_prototype;
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js_Object *Number_prototype;
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js_Object *String_prototype;
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js_Object *RegExp_prototype;
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js_Object *Date_prototype;
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js_Object *Error_prototype;
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js_Object *EvalError_prototype;
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js_Object *RangeError_prototype;
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js_Object *ReferenceError_prototype;
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js_Object *SyntaxError_prototype;
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js_Object *TypeError_prototype;
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js_Object *URIError_prototype;
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unsigned int seed; /* Math.random seed */
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int nextref; /* for js_ref use */
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js_Object *R; /* registry of hidden values */
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js_Object *G; /* the global object */
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js_Environment *E; /* current environment scope */
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js_Environment *GE; /* global environment scope (at the root) */
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/* execution stack */
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int top, bot;
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js_Value *stack;
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/* garbage collector list */
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int gcpause;
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int gcmark;
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unsigned int gccounter, gcthresh;
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js_Environment *gcenv;
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js_Function *gcfun;
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js_Object *gcobj;
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js_String *gcstr;
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js_Object *gcroot; /* gc scan list */
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/* environments on the call stack but currently not in scope */
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int envtop;
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js_Environment *envstack[JS_ENVLIMIT];
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/* debug info stack trace */
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int tracetop;
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js_StackTrace trace[JS_ENVLIMIT];
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/* exception stack */
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int trytop;
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js_Jumpbuf trybuf[JS_TRYLIMIT];
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};
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#endif
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