205 строки
9.7 KiB
C
205 строки
9.7 KiB
C
// script binding functionality
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enum { ID_VAR, ID_FVAR, ID_SVAR, ID_COMMAND, ID_CCOMMAND, ID_ALIAS };
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enum { NO_OVERRIDE = INT_MAX, OVERRIDDEN = 0 };
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enum { IDF_PERSIST = 1<<0, IDF_OVERRIDE = 1<<1, IDF_HEX = 1<<2, IDF_READONLY = 1<<3 };
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struct identstack
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{
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char *action;
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identstack *next;
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};
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union identval
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{
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int i; // ID_VAR
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float f; // ID_FVAR
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char *s; // ID_SVAR
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};
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union identvalptr
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{
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int *i; // ID_VAR
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float *f; // ID_FVAR
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char **s; // ID_SVAR
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};
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struct ident
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{
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int type; // one of ID_* above
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const char *name;
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union
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{
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int minval; // ID_VAR
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float minvalf; // ID_FVAR
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};
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union
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{
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int maxval; // ID_VAR
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float maxvalf; // ID_FVAR
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};
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int override; // either NO_OVERRIDE, OVERRIDDEN, or value
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union
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{
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void (__cdecl *fun)(); // ID_VAR, ID_COMMAND, ID_CCOMMAND
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identstack *stack; // ID_ALIAS
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};
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union
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{
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const char *narg; // ID_COMMAND, ID_CCOMMAND
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char *action; // ID_ALIAS
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identval val; // ID_VAR, ID_FVAR, ID_SVAR
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};
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union
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{
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void *self; // ID_COMMAND, ID_CCOMMAND
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char *isexecuting; // ID_ALIAS
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identval overrideval; // ID_VAR, ID_FVAR, ID_SVAR
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};
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identvalptr storage; // ID_VAR, ID_FVAR, ID_SVAR
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int flags;
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ident() {}
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// ID_VAR
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ident(int t, const char *n, int m, int c, int x, int *s, void *f = NULL, int flags = 0)
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: type(t), name(n), minval(m), maxval(x), override(NO_OVERRIDE), fun((void (__cdecl *)())f), flags(flags | (m > x ? IDF_READONLY : 0))
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{ val.i = c; storage.i = s; }
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// ID_FVAR
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ident(int t, const char *n, float m, float c, float x, float *s, void *f = NULL, int flags = 0)
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: type(t), name(n), minvalf(m), maxvalf(x), override(NO_OVERRIDE), fun((void (__cdecl *)())f), flags(flags | (m > x ? IDF_READONLY : 0))
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{ val.f = c; storage.f = s; }
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// ID_SVAR
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ident(int t, const char *n, char *c, char **s, void *f = NULL, int flags = 0)
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: type(t), name(n), override(NO_OVERRIDE), fun((void (__cdecl *)())f), flags(flags)
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{ val.s = c; storage.s = s; }
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// ID_ALIAS
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ident(int t, const char *n, char *a, int flags)
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: type(t), name(n), override(NO_OVERRIDE), stack(NULL), action(a), isexecuting(NULL), flags(flags) {}
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// ID_COMMAND, ID_CCOMMAND
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ident(int t, const char *n, const char *narg, void *f = NULL, void *s = NULL, int flags = 0)
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: type(t), name(n), override(NO_OVERRIDE), fun((void (__cdecl *)(void))f), narg(narg), self(s), flags(flags) {}
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virtual ~ident() {}
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ident &operator=(const ident &o) { memcpy(this, &o, sizeof(ident)); return *this; } // force vtable copy, ugh
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virtual void changed() { if(fun) fun(); }
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};
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extern void addident(const char *name, ident *id);
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extern const char *intstr(int v);
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extern void intret(int v);
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extern const char *floatstr(float v);
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extern void floatret(float v);
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extern void result(const char *s);
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static inline int parseint(const char *s)
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{
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return int(strtol(s, NULL, 0));
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}
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static inline float parsefloat(const char *s)
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{
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// not all platforms (windows) can parse hexadecimal integers via strtod
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char *end;
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double val = strtod(s, &end);
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return val || end==s || (*end!='x' && *end!='X') ? float(val) : float(parseint(s));
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}
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// nasty macros for registering script functions, abuses globals to avoid excessive infrastructure
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#define COMMANDN(name, fun, nargs) static bool __dummy_##fun = addcommand(#name, (void (*)())fun, nargs)
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#define COMMAND(name, nargs) COMMANDN(name, name, nargs)
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#define _VAR(name, global, min, cur, max, persist) int global = variable(#name, min, cur, max, &global, NULL, persist)
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#define VARN(name, global, min, cur, max) _VAR(name, global, min, cur, max, 0)
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#define VARNP(name, global, min, cur, max) _VAR(name, global, min, cur, max, IDF_PERSIST)
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#define VARNR(name, global, min, cur, max) _VAR(name, global, min, cur, max, IDF_OVERRIDE)
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#define VAR(name, min, cur, max) _VAR(name, name, min, cur, max, 0)
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#define VARP(name, min, cur, max) _VAR(name, name, min, cur, max, IDF_PERSIST)
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#define VARR(name, min, cur, max) _VAR(name, name, min, cur, max, IDF_OVERRIDE)
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#define _VARF(name, global, min, cur, max, body, persist) void var_##name(); int global = variable(#name, min, cur, max, &global, var_##name, persist); void var_##name() { body; }
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#define VARFN(name, global, min, cur, max, body) _VARF(name, global, min, cur, max, body, 0)
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#define VARF(name, min, cur, max, body) _VARF(name, name, min, cur, max, body, 0)
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#define VARFP(name, min, cur, max, body) _VARF(name, name, min, cur, max, body, IDF_PERSIST)
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#define VARFR(name, min, cur, max, body) _VARF(name, name, min, cur, max, body, IDF_OVERRIDE)
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#define _HVAR(name, global, min, cur, max, persist) int global = variable(#name, min, cur, max, &global, NULL, persist | IDF_HEX)
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#define HVARN(name, global, min, cur, max) _HVAR(name, global, min, cur, max, 0)
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#define HVARNP(name, global, min, cur, max) _HVAR(name, global, min, cur, max, IDF_PERSIST)
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#define HVARNR(name, global, min, cur, max) _HVAR(name, global, min, cur, max, IDF_OVERRIDE)
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#define HVAR(name, min, cur, max) _HVAR(name, name, min, cur, max, 0)
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#define HVARP(name, min, cur, max) _HVAR(name, name, min, cur, max, IDF_PERSIST)
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#define HVARR(name, min, cur, max) _HVAR(name, name, min, cur, max, IDF_OVERRIDE)
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#define _HVARF(name, global, min, cur, max, body, persist) void var_##name(); int global = variable(#name, min, cur, max, &global, var_##name, persist | IDF_HEX); void var_##name() { body; }
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#define HVARFN(name, global, min, cur, max, body) _HVARF(name, global, min, cur, max, body, 0)
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#define HVARF(name, min, cur, max, body) _HVARF(name, name, min, cur, max, body, 0)
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#define HVARFP(name, min, cur, max, body) _HVARF(name, name, min, cur, max, body, IDF_PERSIST)
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#define HVARFR(name, min, cur, max, body) _HVARF(name, name, min, cur, max, body, IDF_OVERRIDE)
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#define _FVAR(name, global, min, cur, max, persist) float global = fvariable(#name, min, cur, max, &global, NULL, persist)
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#define FVARN(name, global, min, cur, max) _FVAR(name, global, min, cur, max, 0)
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#define FVARNP(name, global, min, cur, max) _FVAR(name, global, min, cur, max, IDF_PERSIST)
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#define FVARNR(name, global, min, cur, max) _FVAR(name, global, min, cur, max, IDF_OVERRIDE)
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#define FVAR(name, min, cur, max) _FVAR(name, name, min, cur, max, 0)
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#define FVARP(name, min, cur, max) _FVAR(name, name, min, cur, max, IDF_PERSIST)
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#define FVARR(name, min, cur, max) _FVAR(name, name, min, cur, max, IDF_OVERRIDE)
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#define _FVARF(name, global, min, cur, max, body, persist) void var_##name(); float global = fvariable(#name, min, cur, max, &global, var_##name, persist); void var_##name() { body; }
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#define FVARFN(name, global, min, cur, max, body) _FVARF(name, global, min, cur, max, body, 0)
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#define FVARF(name, min, cur, max, body) _FVARF(name, name, min, cur, max, body, 0)
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#define FVARFP(name, min, cur, max, body) _FVARF(name, name, min, cur, max, body, IDF_PERSIST)
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#define FVARFR(name, min, cur, max, body) _FVARF(name, name, min, cur, max, body, IDF_OVERRIDE)
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#define _SVAR(name, global, cur, persist) char *global = svariable(#name, cur, &global, NULL, persist)
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#define SVARN(name, global, cur) _SVAR(name, global, cur, 0)
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#define SVARNP(name, global, cur) _SVAR(name, global, cur, IDF_PERSIST)
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#define SVARNR(name, global, cur) _SVAR(name, global, cur, IDF_OVERRIDE)
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#define SVAR(name, cur) _SVAR(name, name, cur, 0)
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#define SVARP(name, cur) _SVAR(name, name, cur, IDF_PERSIST)
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#define SVARR(name, cur) _SVAR(name, name, cur, IDF_OVERRIDE)
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#define _SVARF(name, global, cur, body, persist) void var_##name(); char *global = svariable(#name, cur, &global, var_##name, persist); void var_##name() { body; }
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#define SVARFN(name, global, cur, body) _SVARF(name, global, cur, body, 0)
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#define SVARF(name, cur, body) _SVARF(name, name, cur, body, 0)
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#define SVARFP(name, cur, body) _SVARF(name, name, cur, body, IDF_PERSIST)
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#define SVARFR(name, cur, body) _SVARF(name, name, cur, body, IDF_OVERRIDE)
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// new style macros, have the body inline, and allow binds to happen anywhere, even inside class constructors, and access the surrounding class
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#define _CCOMMAND(idtype, tv, n, g, proto, b) \
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struct _ccmd_##n : ident \
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{ \
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_ccmd_##n(void *self = NULL) : ident(idtype, #n, g, (void *)run, self) \
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{ \
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addident(name, this); \
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} \
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static void run proto { b; } \
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} __ccmd_##n tv
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#define CCOMMAND(n, g, proto, b) _CCOMMAND(ID_CCOMMAND, (this), n, g, proto, b)
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// anonymous inline commands, uses nasty template trick with line numbers to keep names unique
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#define _ICOMMAND(cmdname, name, nargs, proto, b) template<int N> struct cmdname; template<> struct cmdname<__LINE__> { static bool init; static void run proto; }; bool cmdname<__LINE__>::init = addcommand(name, (void (*)())cmdname<__LINE__>::run, nargs); void cmdname<__LINE__>::run proto \
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{ b; }
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#define ICOMMANDNAME(name) _icmd_##name
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#define ICOMMAND(name, nargs, proto, b) _ICOMMAND(ICOMMANDNAME(name), #name, nargs, proto, b)
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#define ICOMMANDSNAME _icmds_
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#define ICOMMANDS(name, nargs, proto, b) _ICOMMAND(ICOMMANDSNAME, name, nargs, proto, b)
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#define _IVAR(n, m, c, x, b, p) \
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struct var_##n : ident \
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{ \
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var_##n() : ident(ID_VAR, #n, m, c, x, &val.i, NULL, p) \
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{ \
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addident(name, this); \
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} \
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int operator()() { return val.i; } \
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b \
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} n
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#define IVAR(n, m, c, x) _IVAR(n, m, c, x, , 0)
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#define IVARF(n, m, c, x, b) _IVAR(n, m, c, x, void changed() { b; }, 0)
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#define IVARP(n, m, c, x) _IVAR(n, m, c, x, , IDF_PERSIST)
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#define IVARR(n, m, c, x) _IVAR(n, m, c, x, , IDF_OVERRIDE)
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#define IVARFP(n, m, c, x, b) _IVAR(n, m, c, x, void changed() { b; }, IDF_PERSIST)
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#define IVARFR(n, m, c, x, b) _IVAR(n, m, c, x, void changed() { b; }, IDF_OVERRIDE)
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