/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
* Ken Stevens, Steve McClure
*
* This program is free software; you can redistribute it and/or modify
*
* ---
*
- * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
- * related information and legal notices. It is expected that any future
- * projects/authors will amend these files as needed.
+ * See files README, COPYING and CREDITS in the root of the source
+ * tree for related information and legal notices. It is expected
+ * that future projects/authors will amend these files as needed.
*
* ---
*
*
* Known contributors to this file:
* Dave Pare, 1989
+ * Markus Armbruster, 2004
*/
-#ifndef _NSC_H_
-#define _NSC_H_
+#ifndef NSC_H
+#define NSC_H
+#include <stddef.h>
#include "xy.h"
#define NS_LSIZE 128
#define NS_NCOND 16
+/* Value type */
+typedef enum {
+ NSC_NOTYPE,
+ /* promoted types */
+ NSC_LONG, /* long */
+ NSC_DOUBLE, /* double */
+ NSC_STRING, /* char *, zero-terminated string */
+ NSC_TYPEID, /* signed char, index into chr table */
+ /* unpromoted types */
+ NSC_CHAR, /* signed char */
+ NSC_UCHAR, /* unsigned char */
+ NSC_SHORT, /* short */
+ NSC_USHORT, /* unsigned short */
+ NSC_INT, /* int */
+ NSC_XCOORD, /* coord that needs x conversion */
+ NSC_YCOORD, /* coord that needs y conversion */
+ NSC_TIME, /* time_t */
+ NSC_FLOAT, /* float */
+ NSC_STRINGY, /* char[], zero-terminated string */
+ /* FIXME zero may be missing */
+ /* aliases, must match typedefs */
+ NSC_NATID = NSC_UCHAR /* nation id */
+} nsc_type;
+typedef char packed_nsc_type;
+
+/* Return nsc_type for a signed integer with the same size as TYPE. */
+#define NSC_SITYPE(type) \
+ (sizeof(type) == 1 ? NSC_CHAR \
+ : sizeof(type) == sizeof(short) ? NSC_SHORT \
+ : sizeof(type) == sizeof(int) ? NSC_INT \
+ : sizeof(type) == sizeof(long) ? NSC_LONG \
+ : 1/0)
+
+/* Value category */
+typedef enum {
+ NSC_NOCAT,
+ NSC_VAL, /* evaluated value */
+ NSC_OFF, /* symbolic value: at offset in object */
+ NSC_ID /* unresolved identifier (internal use) */
+} nsc_cat;
+typedef char packed_nsc_cat;
+
+enum {
+ NSC_DEITY = bit(0), /* access restricted to deity */
+ NSC_EXTRA = bit(1), /* computable from other selectors */
+ NSC_CONST = bit(2), /* field cannot be changed */
+ NSC_BITS = bit(3) /* value consists of flag bits */
+};
+typedef unsigned char nsc_flags;
+
+/*
+ * Value, possibly symbolic.
+ * If type is NSC_NOTYPE, it's an error value.
+ * If category is NSC_OFF, the value is in a context object at offset
+ * val_as.sym.off + val_as.sym.idx * S, where S is the size of the
+ * value.
+ * If category is NSC_VAL, the value is in val_as, and the type is a
+ * promoted type.
+ */
+struct valstr {
+ packed_nsc_type val_type; /* type of value */
+ packed_nsc_cat val_cat; /* category of value */
+ union {
+ struct { /* cat NSC_OFF */
+ ptrdiff_t off;
+ int len;
+ int idx;
+ } sym;
+ double dbl; /* cat NSC_VAL, type NSC_DOUBLE */
+ struct { /* cat NSC_VAL, type NSC_STRING, cat NSC_ID */
+ char *base;
+ size_t maxsz;
+ } str;
+ long lng; /* cat NSC_VAL, type NSC_LONG, NSC_TYPEID */
+ } val_as;
+};
+
+/* Compiled condition */
struct nscstr {
- long fld1; /* first commodity or number */
- long fld2; /* second commodity or number */
- int oper; /* required relationship operator */
+ char operator; /* '<', '=', '>', '#' */
+ packed_nsc_type optype; /* operator type */
+ struct valstr lft; /* left operand */
+ struct valstr rgt; /* right operand */
};
+/* Selection type */
+typedef enum {
+ NS_UNDEF, /* error value */
+ NS_LIST, /* list of IDs */
+ NS_DIST, /* circular area */
+ NS_AREA, /* rectangular area */
+ NS_ALL, /* everything */
+ NS_XY, /* one sector area */
+ NS_GROUP /* group, i.e. fleet, wing, army */
+} ns_seltype;
+
+/* Sector iterator */
struct nstr_sect {
coord x, y; /* current x-y */
coord dx, dy; /* accumlated x,y travel */
int id; /* return value of sctoff */
- int type; /* type of query */
+ ns_seltype type; /* type of query */
int curdist; /* dist query: current range */
struct range range; /* area of coverage */
int dist; /* dist query: range */
coord cx, cy; /* dist query: center x-y */
- int (*read)(int type, int id, caddr_t ptr); /* read function */
+ int (*read)(int type, int id, void *ptr); /* read function */
int ncond; /* # of selection conditions */
struct nscstr cond[NS_NCOND]; /* selection conditions */
};
+/* Item iterator */
struct nstr_item {
int cur; /* current item */
- int sel; /* selection type */
+ ns_seltype sel; /* selection type */
int type; /* item type being selected */
int curdist; /* if NS_DIST, current item's dist */
struct range range; /* NS_AREA/NS_DIST: range selector */
int size; /* NS_LIST: size of list */
int index; /* NS_LIST: index */
int list[NS_LSIZE]; /* NS_LIST: item list */
- int (*read)(int type, int id, caddr_t ptr); /* read function */
- int flags; /* EFF_ flags */
+ int (*read)(int type, int id, void *ptr); /* read function */
+ int flags; /* ef_flags(TYPE) */
int ncond; /* # of selection conditions */
- struct nscstr cond[NS_NCOND]; /* selection conditions */
+ struct nscstr cond[NS_NCOND]; /* selection conditions */
};
-#define NS_UNDEF 0
-#define NS_LIST 1
-#define NS_DIST 2
-#define NS_AREA 3
-#define NS_ALL 4
-#define NS_XY 5
-#define NS_GROUP 6
-
-/*
- * looks something like this:
- * D: only deity can query on this field
- * R: round this value to the nearest 10 if not owner
- * T: type of pointer.
- * C: catagory of value.
- * V: value.
- *
- * 22 2 1 1 1
- * 32 0 8 6 2 8 4 0
- * xxxx xxxx xxxx xxxx xxxx xxxx
- * DRTT TTCC VVVV VVVV VVVV VVVV
- */
-
/*
- * catagories
+ * Symbol binding: associate NAME with VALUE.
*/
-#define NSC_VAL (0) /* normal number */
-#define NSC_VAR (1<<16) /* is a vtype */
-#define NSC_OFF (2<<16) /* is an offset */
-#define NSC_CMASK (3<<16)
+struct symbol {
+ int value;
+ char *name;
+};
/*
- * how to interpret "offset" fields
+ * Selector descriptor.
*/
-#define NSC_CHAR (1<<18) /* pointer to s_char */
-#define NSC_UCHAR (2<<18) /* pointer to uchar */
-#define NSC_SHORT (3<<18) /* pointer to short */
-#define NSC_USHORT (4<<18) /* pointer to unsigned short */
-#define NSC_INT (5<<18) /* pointer to int */
-#define NSC_LONG (6<<18) /* pointer to long */
-#define NSC_XCOORD (7<<18) /* pointer to short that needs x conversion */
-#define NSC_YCOORD (8<<18) /* pointer to short that needs y conversion */
-#define NSC_FLOAT (9<<18) /* pointer to float */
-#define NSC_CHARP (10<<18) /* pointer to string pointer */
-#define NSC_TIME (11<<18) /* pointer to time_t */
-#define NSC_TMASK (15<<18)
-
-#define NSC_NATID NSC_UCHAR /* change if natid typedef changes */
-
-#define NSC_MASK (0xffff0000)
-
-#define NSC_ROUND (1<<22)
-#define NSC_DEITY (1<<23)
-
struct castr {
- long ca_code; /* encoded form */
- s_char *ca_name; /* name used for matches */
- u_short ca_len; /* Used for arrays */
- long ca_edv; /* which commands is this field visible to? */
+ packed_nsc_type ca_type; /* type of value */
+ nsc_flags ca_flags;
+ unsigned short ca_len; /* non-zero: is an array; #array elements */
+ ptrdiff_t ca_off; /* offset of value in the context object */
+ char *ca_name;
+ int ca_table; /* referred table ID, or EF_BAD */
};
/* variables using the above */
-extern struct castr var_ca[];
+extern struct castr ichr_ca[];
+extern struct castr pchr_ca[];
extern struct castr sect_ca[];
+extern struct castr dchr_ca[];
extern struct castr ship_ca[];
+extern struct castr mchr_ca[];
extern struct castr plane_ca[];
+extern struct castr plchr_ca[];
extern struct castr land_ca[];
+extern struct castr lchr_ca[];
extern struct castr nuke_ca[];
-extern struct castr news_ca[];
-extern struct castr nat_ca[];
+extern struct castr nchr_ca[];
extern struct castr treaty_ca[];
-extern struct castr trade_ca[];
extern struct castr loan_ca[];
-extern struct castr genitem_ca[];
-extern struct castr map_ca[];
-extern struct castr bmp_ca[];
+extern struct castr news_ca[];
extern struct castr lost_ca[];
extern struct castr commodity_ca[];
+extern struct castr trade_ca[];
+extern struct castr nat_ca[];
+extern struct castr cou_ca[];
+extern struct castr realm_ca[];
+extern struct castr intrchr_ca[];
+extern struct castr rpt_ca[];
+extern struct castr empfile_ca[];
+extern struct castr symbol_ca[];
+extern struct symbol ship_chr_flags[];
+extern struct symbol plane_chr_flags[];
+extern struct symbol land_chr_flags[];
+extern struct symbol nuke_chr_flags[];
+extern struct symbol treaty_flags[];
+extern struct castr mdchr_ca[];
+extern struct symbol meta_type[];
+extern struct symbol meta_flags[];
+extern struct symbol missions[];
+extern struct symbol plane_flags[];
+extern struct symbol retreat_flags[];
+extern struct symbol nation_status[];
+extern struct symbol nation_flags[];
+extern struct symbol nation_relations[];
+extern struct symbol level[];
+extern struct symbol agreement_statuses[];
+extern struct symbol plague_stages[];
+extern struct symbol packing[];
+extern struct symbol resources[];
+extern struct symbol sector_navigation[];
/* src/lib/subs/nstr.c */
-extern s_char *nstr_comp(struct nscstr *, int *, int, s_char *);
-extern int encode(register s_char *, long *, int);
-
-
-extern s_char *decodep(register long code, register void *addr);
-
-#endif /* _NSC_H_ */
+extern int nstr_comp(struct nscstr *np, int len, int type, char *str);
+extern char *nstr_comp_val(char *, struct valstr*, int);
+extern int nstr_coerce_val(struct valstr *, nsc_type, char *);
+extern int nstr_exec(struct nscstr *, int, void *);
+extern void nstr_exec_val(struct valstr *, natid, void *, nsc_type);
+extern char *symbol_by_value(int, struct symbol *);
+
+#endif
projects / empserver / blobdiff