#if 0
gcc ${CFLAGS:--s -O2} -c -Wno-unused-result class.c `sdl-config --cflags`
exit
#endif
/*
This program is part of Free Hero Mesh and is public domain.
*/
#define HEROMESH_CLASS
#include "SDL.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sqlite3.h"
#include "smallxrm.h"
#include "heromesh.h"
#define TF_COMMA 0x0001 // has a comma modifier
#define TF_EQUAL 0x0002 // has an equal sign modifier
#define TF_ABNORMAL 0x0004 // with TF_NAME, not directly an opcode
#define TF_COMPAT 0x0008 // add 1 to opcode in compatibility mode
#define TF_DIR 0x0010 // token is a direction
#define TF_DROP 0x0020 // add 0x2000 to opcode if followed by OP_DROP
#define TF_NAME 0x0080 // token is a name or opcode
#define TF_KEY 0x0100 // token is a Hero Mesh key name
#define TF_OPEN 0x0400 // token is (
#define TF_CLOSE 0x0800 // token is )
#define TF_INT 0x1000 // token is a number
#define TF_FUNCTION 0x2000 // token is a user function
#define TF_MACRO 0x4000 // token is a macro
#define TF_EOF 0x8000 // end of file
typedef struct {
const char*txt;
Uint32 num;
} Op_Names;
#include "instruc.h"
#define Tokenf(x) (tokent&(x))
Value initglobals[0x800];
Class*classes[0x4000];
const char*messages[0x4000];
Uint16 functions[0x4000];
int max_animation=32;
Sint32 max_volume=10000;
Uint8 back_color=1;
char**stringpool;
#define HASH_SIZE 8888
#define LOCAL_HASH_SIZE 5555
typedef struct {
Uint16 id;
char*txt;
} Hash;
typedef struct InputStack {
FILE*classfp;
int linenum;
struct InputStack*next;
} InputStack;
typedef struct TokenList {
Uint16 t;
Uint32 v;
char*str;
Uint16 ref;
struct TokenList*next;
} TokenList;
typedef struct MacroStack {
TokenList*tok;
Sint16 n;
TokenList**args;
struct MacroStack*next;
} MacroStack;
typedef struct LabelStack {
Uint16 id;
Uint16 addr;
struct LabelStack*next;
} LabelStack;
static FILE*classfp;
static Uint16 tokent;
static Uint32 tokenv;
static int linenum=1;
static char tokenstr[0x2000];
static int undef_class=1;
static int undef_message=0;
static int num_globals=0;
static int num_functions=0;
static int num_strings=0;
static char pushback=0;
static Hash*glohash;
static InputStack*inpstack;
static MacroStack*macstack;
static TokenList**macros;
static LabelStack*labelstack;
static Uint16*labelptr;
#define ParseError(a,...) fatal("On line %d: " a,linenum,##__VA_ARGS__)
static const unsigned char chkind[256]={
['$']=1, ['!']=1, ['\'']=1, ['#']=1, ['@']=1, ['%']=1, ['&']=1, [':']=1,
['0'...'9']=2, ['-']=2, ['+']=2,
['A'...'Z']=3, ['a'...'z']=3, ['_']=3, ['?']=3, ['.']=3, ['*']=3, ['/']=3,
};
#define MIN_VERSION 0
#define MAX_VERSION 0
#define MAX_MACRO 0x3FC0
#define MAC_ADD 0xFFC0
#define MAC_SUB 0xFFC1
#define MAC_MUL 0xFFC2
#define MAC_DIV 0xFFC3
#define MAC_MOD 0xFFC4
#define MAC_BAND 0xFFC5
#define MAC_BOR 0xFFC6
#define MAC_BXOR 0xFFC7
#define MAC_BNOT 0xFFC8
#define MAC_CAT 0xFFC9
#define MAC_BIT 0xFFCA
#define MAC_VERSION 0xFFE0
#define MAC_DEFINE 0xFFE1
#define MAC_INCLUDE 0xFFE2
#define MAC_CALL 0xFFE3
#define MAC_UNDEFINED 0xFFFF
static TokenList*add_macro(void) {
TokenList*o=malloc(sizeof(TokenList));
if(!o) fatal("Allocation failed\n");
o->t=tokent;
o->v=tokenv;
o->str=0;
o->ref=0;
o->next=0;
if(*tokenstr) {
o->str=strdup(tokenstr);
if(!o->str) fatal("Allocation failed\n");
}
return o;
}
static void ref_macro(TokenList*o) {
while(o) {
if(++o->ref==65000) ParseError("Reference count of macro token list overflowed\n");
o=o->next;
}
}
static void free_macro(TokenList*o) {
TokenList*p;
while(o && !o->ref--) {
free(o->str);
o=(p=o)->next;
free(p);
}
}
static inline TokenList*step_macro(TokenList*o) {
TokenList*p=o->next;
if(!o->ref--) {
free(o->str);
free(o);
}
return p;
}
static void read_quoted_string(void) {
int c,i,n;
int isimg=0;
for(i=0;i<0x1FFD;) {
c=fgetc(classfp);
if(c==EOF) {
ParseError("Unterminated string literal\n");
} else if(c=='\\') {
if(isimg) {
isimg=0;
tokenstr[i++]=c;
} else switch(c=fgetc(classfp)) {
case '"': case '\\': tokenstr[i++]=c; break;
case '0' ... '7': tokenstr[i++]=c+1-'0'; break;
case 'b': tokenstr[i++]=15; break;
case 'c': tokenstr[i++]=12; break;
case 'i': tokenstr[i++]=14; isimg=1; break;
case 'l': tokenstr[i++]=11; break;
case 'n': tokenstr[i++]=10; break;
case 'q': tokenstr[i++]=16; break;
case 'x':
c=fgetc(classfp);
if(c>='0' && c<='9') n=c-'0';
else if(c>='A' && c<='F') n=c+10-'A';
else if(c>='a' && c<='f') n=c+10-'a';
else ParseError("Invalid string escape: \\x%c\n",c);
n<<=4;
c=fgetc(classfp);
if(c>='0' && c<='9') n|=c-'0';
else if(c>='A' && c<='F') n|=c+10-'A';
else if(c>='a' && c<='f') n|=c+10-'a';
else ParseError("Invalid string escape: \\x%X%c\n",n>>4,c);
if(n<32) tokenstr[i++]=31;
tokenstr[i++]=n?:255;
break;
default: ParseError("Invalid string escape: \\%c\n",c);
}
} else if(c=='"') {
if(isimg) ParseError("Unterminated \\i escape in string literal\n");
tokenstr[i]=0;
return;
} else if(c!='\r') {
tokenstr[i++]=c;
if(c=='\n') ++linenum;
}
}
ParseError("Too long string literal\n");
}
static int name_compar(const void*a,const void*b) {
const Op_Names*x=a;
const Op_Names*y=b;
return strcmp(x->txt,y->txt);
}
static Class*initialize_class(int n,int f,const char*name) {
Class*cl;
if(classes[n]) fatal("Duplicate class number %d\n",n);
cl=classes[n]=malloc(sizeof(Class));
if(!cl) fatal("Allocation failed\n");
cl->name=strdup(name);
if(!cl->name) fatal("Allocation failed\n");
cl->edithelp=cl->gamehelp=0;
cl->codes=cl->messages=cl->images=0;
cl->height=cl->weight=cl->climb=cl->density=cl->volume=cl->strength=cl->arrivals=cl->departures=0;
cl->temperature=cl->misc4=cl->misc5=cl->misc6=cl->misc7=0;
cl->uservars=cl->hard[0]=cl->hard[1]=cl->hard[2]=cl->hard[3]=cl->nmsg=0;
cl->oflags=cl->sharp[0]=cl->sharp[1]=cl->sharp[2]=cl->sharp[3]=0;
cl->shape=cl->shovable=cl->collisionLayers=cl->nimages=0;
cl->cflags=f;
if(undef_class<=n) undef_class=n+1;
}
Uint16 get_message_ptr(int c,int m) {
if(!classes[c]) return 0xFFFF;
if(classes[c]->nmsg<=m) return 0xFFFF;
return classes[c]->messages[m];
}
static void set_message_ptr(int c,int m,int p) {
if(m>=classes[c]->nmsg) {
classes[c]->messages=realloc(classes[c]->messages,(m+1)*sizeof(Uint16));
if(!classes[c]->messages) fatal("Allocation failed\n");
while(m>=classes[c]->nmsg) classes[c]->messages[classes[c]->nmsg++]=0xFFFF;
}
classes[c]->messages[m]=p;
}
static int look_class_name(void) {
int i;
int u=undef_class;
for(i=1;i<undef_class;i++) {
if(classes[i]) {
if(!strcmp(classes[i]->name,tokenstr)) {
if(classes[i]->cflags&CF_NOCLASS2) classes[i]->cflags|=CF_NOCLASS1;
return i;
}
} else {
u=i;
}
}
if(u==0x4000) ParseError("Too many class names; cannot add $%s\n",tokenstr);
initialize_class(u,CF_NOCLASS1,tokenstr);
return u;
}
static int look_message_name(void) {
int i;
int u=undef_message;
for(i=0;i<undef_message;i++) {
if(messages[i]) {
if(!strcmp(messages[i],tokenstr)) return i;
} else {
u=i;
}
}
if(u==0x4000) ParseError("Too many message names; cannot add #%s",tokenstr);
if(u==undef_message) ++undef_message;
messages[u]=strdup(tokenstr);
if(!messages[u]) fatal("Allocation failed\n");
return u;
}
static Uint16 look_hash(Hash*tbl,int size,Uint16 minv,Uint16 maxv,Uint16 newv,const char*err) {
int h,i,m;
for(h=i=0;tokenstr[i];i++) h=(13*h+tokenstr[i])%size;
m=h;
for(;;) {
if(tbl[h].id>=minv && tbl[h].id<=maxv && !strcmp(tokenstr,tbl[h].txt)) return tbl[h].id;
if(!tbl[h].id) {
if(newv>maxv) ParseError("Too many %s\n",err);
tbl[h].txt=strdup(tokenstr);
if(!tbl[h].txt) ParseError("Out of string space in hash table\n");
tbl[h].id=newv;
return 0;
}
h=(h+1)%size;
if(h==m) ParseError("Hash table full\n");
}
}
static Uint16 look_hash_mac(void) {
int h,i,m;
for(h=i=0;tokenstr[i];i++) h=(13*h+tokenstr[i])%HASH_SIZE;
m=h;
for(;;) {
if(glohash[h].id>=0xC000 && !strcmp(tokenstr,glohash[h].txt)) return h;
if(!glohash[h].id) {
glohash[h].txt=strdup(tokenstr);
if(!glohash[h].txt) ParseError("Out of string space in hash table\n");
glohash[h].id=0xFFFF;
return h;
}
h=(h+1)%HASH_SIZE;
if(h==m) ParseError("Hash table full\n");
}
}
#define ReturnToken(x,y) do{ tokent=x; tokenv=y; return; }while(0)
static void nxttok1(void) {
int c,i,fl,n,pr;
magain: if(macstack) {
TokenList*tl=0;
pr=0;
tokent=macstack->tok->t;
if(tokent&TF_EOF) ParseError("Unexpected end of file in macro expansion\n");
tokenv=macstack->tok->v;
*tokenstr=0;
if(macstack->tok->str) strcpy(tokenstr,macstack->tok->str);
if(main_options['M']) {
printf("M* Macro %04X %08X \"",tokent,tokenv);
for(i=0;tokenstr[i];i++) {
if(tokenstr[i]<32 || tokenstr[i]>126) printf("<%02X>",tokenstr[i]&255);
else putchar(tokenstr[i]);
}
printf("\"\n");
}
if(tokent==TF_MACRO+TF_INT && macstack->n>=0) {
if(tokenv&~0xFF) {
tokenv-=0x100;
} else {
if(tokenv<macstack->n) tl=macstack->args[tokenv];
if(tl) ref_macro(tl);
pr=1;
}
}
macstack->tok=step_macro(macstack->tok);
if(!macstack->tok) {
MacroStack*ms=macstack->next;
for(i=0;i<macstack->n;i++) free_macro(macstack->args[i]);
free(macstack->args);
free(macstack);
macstack=ms;
if(main_options['M']) printf("M.\n");
}
if(pr) {
if(tl) {
MacroStack*ms=malloc(sizeof(MacroStack));
if(!ms) fatal("Allocation failed\n");
ms->tok=tl;
ms->n=-1;
ms->args=0;
ms->next=macstack;
macstack=ms;
}
if(main_options['M']) printf("M^ %d\n",tl?1:0);
goto magain;
}
return;
}
fl=n=pr=0;
tokent=tokenv=0;
*tokenstr=0;
again:
c=fgetc(classfp);
while(c==' ' || c=='\t' || c=='\r' || c=='\n') {
if(c=='\n') ++linenum;
c=fgetc(classfp);
}
if(c==EOF) ReturnToken(TF_EOF,0);
if(c==';') {
while(c!=EOF && c!='\n') c=fgetc(classfp);
++linenum;
goto again;
}
if(c=='(') ReturnToken(TF_OPEN,0);
if(c==')') ReturnToken(TF_CLOSE,0);
if(c=='"') {
tokent=TF_NAME|TF_ABNORMAL;
tokenv=OP_STRING;
read_quoted_string();
return;
}
if(c=='=') {
fl|=TF_EQUAL;
c=fgetc(classfp);
}
if(c==',') {
fl|=TF_COMMA;
c=fgetc(classfp);
}
if(c=='{') {
c=fgetc(classfp);
while(c==' ' || c=='\t' || c=='\r' || c=='\n') {
if(c=='\n') ++linenum;
c=fgetc(classfp);
}
while(c>0 && (chkind[c]&2)) {
if(n==256) {
tokenstr[256]=0;
ParseError("Identifier too long: %s\n",tokenstr);
}
tokenstr[n++]=c;
c=fgetc(classfp);
}
tokenstr[n]=0;
if(!n) fatal("Expected macro name\n");
if(c!=EOF) ungetc(c,classfp);
ReturnToken(TF_MACRO|TF_OPEN,look_hash_mac());
}
if(c=='}') ReturnToken(TF_MACRO|TF_CLOSE,0);
if(c=='|') ReturnToken(TF_MACRO,1);
if(c=='\\') {
i=0;
while((c=fgetc(classfp))=='\\') i+=0x100;
tokenv=0;
for(;c>='0' && c<='9';c=fgetc(classfp)) tokenv=10*tokenv+c-'0';
--tokenv;
if(tokenv&~255) ParseError("Macro parameter reference out of range\n");
if(c!=EOF) ungetc(c,classfp);
tokent=TF_MACRO|TF_INT;
tokenv|=i;
return;
}
if(c==EOF) ParseError("Unexpected end of file\n");
if(chkind[c]==1) {
pr=c;
c=fgetc(classfp);
if(c==EOF) ParseError("Unexpected end of file\n");
}
while(c>0 && (chkind[c]&2)) {
if(n==256) {
tokenstr[256]=0;
ParseError("Identifier too long: %s\n",tokenstr);
}
tokenstr[n++]=c;
c=fgetc(classfp);
}
tokenstr[n]=0;
if(!n) fatal("Expected identifier\n");
if(c!=EOF) ungetc(c,classfp);
switch(pr) {
case 0:
if(chkind[c=*tokenstr]==2) {
char*e;
if(c=='-' || c=='+') n=1; else n=0;
if(n && !tokenstr[1]) goto norm;
tokent=TF_INT;
if(fl) ParseError("Invalid use of , and = in token\n");
if(c=='0' && tokenstr[1]=='x') {
tokenv=strtol(tokenstr+2,&e,16);
} else if(c=='0' && tokenstr[1]=='o') {
tokenv=strtol(tokenstr+2,&e,8);
} else {
tokenv=strtol(tokenstr+n,&e,10);
}
if(e && *e) ParseError("Invalid token: %s\n",tokenstr);
if(c=='-') tokenv=-tokenv;
} else {
static Op_Names key={tokenstr};
const Op_Names*op;
norm:
op=bsearch(&key,op_names,N_OP_NAMES,sizeof(Op_Names),name_compar);
if(!op) ParseError("Invalid token: %s\n",tokenstr);
tokenv=op->num&0xFFFF;
tokent=op->num>>16;
if(fl&~tokent) ParseError("Invalid use of , and = in token: %s\n",tokenstr);
if(fl&TF_COMMA) tokenv+=0x0800;
if(fl&TF_EQUAL) tokenv+=0x1000;
tokent&=fl|~(TF_COMMA|TF_EQUAL);
}
break;
case '$':
if(fl) ParseError("Invalid use of , and = in token\n");
tokent=TF_NAME;
tokenv=look_class_name()+0x4000;
break;
case '!':
// Just ignore sounds for now
if(fl) ParseError("Invalid use of , and = in token\n");
tokent=TF_NAME;
tokenv=0x0400;
break;
case '%':
if(fl&TF_COMMA) ParseError("Invalid use of , in token\n");
tokent=TF_NAME|TF_ABNORMAL|fl;
tokenv=OP_LOCAL;
break;
case '@':
if(fl&TF_COMMA) ParseError("Invalid use of , in token\n");
tokent=TF_NAME|fl;
tokenv=look_hash(glohash,HASH_SIZE,0x2800,0x2FFF,num_globals+0x2800,"user global variables")?:(num_globals++)+0x2800;
break;
case '#':
if(fl) ParseError("Invalid use of , and = in token\n");
tokent=TF_NAME;
tokenv=look_message_name()+0xC000;
break;
case ':':
tokent=TF_NAME|TF_ABNORMAL|fl;
tokenv=OP_LABEL;
break;
case '&':
if(fl) ParseError("Invalid use of , and = in token\n");
tokent=TF_FUNCTION|TF_ABNORMAL;
tokenv=look_hash(glohash,HASH_SIZE,0x8000,0xBFFF,num_functions+0x8000,"user functions")?:(num_functions++)+0x8000;
break;
case '\'':
if(fl) ParseError("Invalid use of , and = in token\n");
tokent=TF_NAME|TF_KEY;
for(i=8;i<256;i++) {
if(heromesh_key_names[i] && !strcmp(heromesh_key_names[i],tokenstr)) {
tokenv=i;
return;
}
}
ParseError("Invalid Hero Mesh key name: %s\n",tokenstr);
break;
}
}
static void define_macro(Uint16 name) {
int i;
TokenList**t;
if(glohash[name].id<0xC000) fatal("Confusion\n");
if(glohash[name].id<MAX_MACRO+0xC000) {
free_macro(macros[i=glohash[name].id-0xC000]);
macros[i]=0;
} else {
for(i=0;i<MAX_MACRO;i++) if(!macros[i]) break;
if(i==MAX_MACRO) ParseError("Too many macro definitions\n");
}
glohash[name].id=i+0xC000;
t=macros+i;
i=1;
for(;;) {
nxttok1();
if(tokent==TF_MACRO+TF_OPEN && ++i>65000) ParseError("Too much macro nesting\n");
if(tokent==TF_MACRO+TF_CLOSE && !--i) break;
*t=add_macro();
t=&(*t)->next;
}
}
static void begin_include_file(const char*name) {
InputStack*nxt=inpstack;
inpstack=malloc(sizeof(InputStack));
if(!inpstack) fatal("Allocation failed\n");
inpstack->classfp=classfp;
inpstack->linenum=linenum;
inpstack->next=nxt;
linenum=1;
//TODO: Use the correct directory to load the include file
classfp=fopen(name,"r");
if(!classfp) ParseError("Cannot open include file \"%s\": %m\n",name);
}
static void begin_macro(TokenList*mac) {
MacroStack*ms=malloc(sizeof(MacroStack));
TokenList**ap=0;
int a=0;
int b=0;
int c=0;
ref_macro(mac);
if(!ms) fatal("Allocation failed\n");
ms->tok=mac;
ms->n=0;
ms->args=0;
for(;;) {
nxttok1();
if(tokent&TF_EOF) ParseError("Unexpected end of file in macro argument\n");
if(main_options['M']) {
int i;
printf("M= %c%4d %04X %08X \"",b?'|':a?'^':' ',ms->n,tokent,tokenv);
for(i=0;tokenstr[i];i++) {
if(tokenstr[i]<32 || tokenstr[i]>126) printf("<%02X>",tokenstr[i]&255);
else putchar(tokenstr[i]);
}
printf("\"\n");
}
if(tokent&TF_OPEN) {
++a;
if(tokent&TF_MACRO) ++c;
}
if(tokent&TF_CLOSE) {
--a;
if(tokent&TF_MACRO) --c;
}
if(c==-1) {
if(a!=-1 && !b) ParseError("Misnested macro argument\n");
ms->next=macstack;
macstack=ms;
return;
} else if(a==-1 && !b) {
ParseError("Misnested macro argument\n");
} else if(tokent==TF_MACRO && tokenv==1 && !a && !b) {
if(c) ParseError("Misnested macro argument\n");
b=1;
ms->args=realloc(ms->args,++ms->n*sizeof(TokenList*));
if(!ms->args) fatal("Allocation failed\n");
ap=ms->args+ms->n-1;
*ap=0;
} else {
if(!b && !(tokent&TF_CLOSE) && a==(tokent&TF_OPEN?1:0)) {
ms->args=realloc(ms->args,++ms->n*sizeof(TokenList*));
if(!ms->args) fatal("Allocation failed\n");
ap=ms->args+ms->n-1;
*ap=0;
}
*ap=add_macro();
ap=&((*ap)->next);
}
}
}
static void nxttok(void) {
if(pushback) {
pushback=0;
return;
}
if(StackProtection()) fatal("Stack overflow\n");
again:
nxttok1();
if(tokent&TF_EOF) {
if(inpstack) {
InputStack s=*inpstack;
free(inpstack);
fclose(classfp);
classfp=s.classfp;
linenum=s.linenum;
inpstack=s.next;
goto again;
}
} else if(tokent&TF_MACRO) {
Uint32 n;
char*s;
if(tokent&TF_OPEN) {
call:
if(main_options['M']) printf("M+ {%s}\n",glohash[tokenv].txt);
switch(glohash[tokenv].id) {
case 0xC000 ... MAX_MACRO+0xC000-1:
begin_macro(macros[glohash[tokenv].id-0xC000]);
goto again;
case MAC_ADD:
n=0;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n+=tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_SUB:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
n=tokenv;
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
n-=tokenv;
nxttok();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
tokent=TF_INT;
tokenv=n;
break;
case MAC_MUL:
n=1;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n*=tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_DIV:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
n=tokenv;
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(!tokenv) ParseError("Division by zero\n");
n/=tokenv;
nxttok();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
tokent=TF_INT;
tokenv=n;
break;
case MAC_MOD:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
n=tokenv;
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(!tokenv) ParseError("Division by zero\n");
n%=tokenv;
nxttok();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
tokent=TF_INT;
tokenv=n;
break;
case MAC_BAND:
n=-1;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n&=tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_BOR:
n=0;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n|=tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_BXOR:
n=0;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n^=tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_BNOT:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
n=~tokenv;
nxttok();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
tokent=TF_INT;
tokenv=n;
break;
case MAC_CAT:
s=malloc(0x2000);
if(!s) fatal("Allocation failed\n");
n=0;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) {
break;
} else if(tokent==TF_INT) {
sprintf(tokenstr,"%d",tokenv);
goto isname;
} else if(tokent&TF_NAME) {
isname:
if(strlen(tokenstr)+n>=0x1FFE) ParseError("Concatenated string too long\n");
strcpy(s+n,tokenstr);
n+=strlen(tokenstr);
} else if(tokent!=TF_MACRO || tokenv!=1) {
ParseError("Number or string or name expected\n");
}
}
s[n]=0;
strcpy(tokenstr,s);
free(s);
ReturnToken(TF_NAME|TF_ABNORMAL,OP_STRING);
case MAC_BIT:
n=0;
for(;;) {
nxttok();
if(tokent==TF_MACRO+TF_CLOSE) break;
if(tokent!=TF_INT) ParseError("Number expected\n");
n|=1<<tokenv;
}
tokent=TF_INT;
tokenv=n;
break;
case MAC_VERSION:
nxttok1();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(tokenv<MIN_VERSION || tokenv>MAX_VERSION) ParseError("Version number out of range\n");
nxttok1();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
goto again;
case MAC_DEFINE:
if(!macros) {
macros=calloc(MAX_MACRO,sizeof(TokenList*));
if(!macros) fatal("Allocation failed\n");
}
nxttok();
if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
define_macro(look_hash_mac());
goto again;
case MAC_INCLUDE:
if(macstack) ParseError("Cannot use {include} inside of a macro\n");
nxttok1();
if(tokent==TF_MACRO && tokenv==1) ReturnToken(TF_EOF,0);
if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
n=look_hash_mac();
nxttok1();
if(tokent!=TF_MACRO+TF_CLOSE) ParseError("Too many macro arguments\n");
begin_include_file(glohash[n].txt);
goto again;
case MAC_CALL:
nxttok();
if(!(tokent&TF_NAME) || tokenv!=OP_STRING) ParseError("String literal expected\n");
tokenv=look_hash_mac();
goto call;
case MAC_UNDEFINED:
ParseError("Undefined macro: {%s}\n",tokenstr);
break;
default:
ParseError("Strange macro token: 0x%04X\n",glohash[tokenv].id);
}
if(main_options['M']) printf("M-\n");
}
}
}
static int pool_string(const char*s) {
int i;
for(i=0;i<num_strings;i++) if(!strcmp(s,stringpool[i])) return i;
i=num_strings++;
if(i>32768) ParseError("Too many string literals\n");
stringpool=realloc(stringpool,num_strings*sizeof(stringpool));
if(!stringpool) fatal("Allocation failed\n");
stringpool[i]=strdup(s);
if(!stringpool[i]) fatal("Allocation failed\n");
return i;
}
static Value parse_constant_value(void) {
if(tokent==TF_INT) {
return NVALUE(tokenv);
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
case 0x0000 ... 0x00FF: return NVALUE(tokenv);
case 0x0100 ... 0x01FF: return NVALUE(tokenv-0x0200);
case 0x0200 ... 0x02FF: return MVALUE(tokenv&255);
case 0x0300 ... 0x03FF: return UVALUE(0,TY_SOUND);
case 0x0400 ... 0x04FF: return UVALUE(0,TY_USOUND);
case 0x4000 ... 0x7FFF: return CVALUE(tokenv-0x4000);
case OP_STRING: return UVALUE(pool_string(tokenstr),TY_STRING);
case OP_BITCONSTANT ... OP_BITCONSTANT_LAST: return NVALUE(1<<(tokenv&31));
case 0xC000 ... 0xFFFF: return MVALUE(tokenv-0xBF00);
}
}
ParseError("Constant value expected\n");
}
static void begin_label_stack(void) {
labelstack=0;
labelptr=malloc(0x8000*sizeof(Uint16));
if(!labelptr) fatal("Allocation failed\n");
memset(labelptr,255,0x8000*sizeof(Uint16));
*labelptr=0x8001;
}
static void end_label_stack(Uint16*codes,Hash*hash) {
LabelStack*s;
while(labelstack) {
s=labelstack;
if(labelptr[s->id-0x8000]==0xFFFF) {
int i;
for(i=0;i<LOCAL_HASH_SIZE;i++) {
if(hash[i].id==s->id) ParseError("Label :%s mentioned but never defined\n",hash[i].txt);
}
ParseError("Label mentioned but never defined\n");
}
codes[s->addr]=labelptr[s->id-0x8000];
labelstack=s->next;
free(s);
}
free(labelptr);
labelstack=0;
labelptr=0;
}
#define AddInst(x) (cl->codes[ptr++]=(x),prflag=0)
#define AddInst2(x,y) (cl->codes[ptr++]=(x),cl->codes[ptr++]=(y),prflag=0,peep=ptr)
#define AddInstF(x,y) (cl->codes[ptr++]=(x),prflag=(y))
#define ChangeInst(x) (cl->codes[ptr-1]x,prflag=0)
#define InstFlag(x) (peep<ptr && (prflag&(x)))
#define Inst7bit() (peep<ptr && cl->codes[ptr-1]<0x0080)
#define Inst8bit() (peep<ptr && cl->codes[ptr-1]<0x0100)
#define AbbrevOp(x,y) case x: if(Inst7bit()) ChangeInst(+=0x1000|((y)<<4)); else AddInstF(x,tokent); break
#define FlowPush(x) do{ if(flowdepth==64) ParseError("Too much flow control nesting\n"); flowop[flowdepth]=x; flowptr[flowdepth++]=ptr; }while(0)
#define FlowPop(x) do{ if(!flowdepth || flowop[--flowdepth]!=(x)) ParseError("Flow control mismatch\n"); }while(0)
static int parse_instructions(int cla,int ptr,Hash*hash,int compat) {
int peep=ptr;
int prflag=0;
Class*cl=classes[cla];
int flowdepth=0;
Uint16 flowop[64];
Uint16 flowptr[64];
int x,y;
cl->codes=realloc(cl->codes,0x10000*sizeof(Uint16));
if(!cl->codes) fatal("Allocation failed\n");
for(;;) {
nxttok();
if(Tokenf(TF_MACRO)) ParseError("Unexpected macro\n");
if(Tokenf(TF_INT)) {
numeric:
if(!(tokenv&~0xFFL)) AddInst(tokenv);
else if(!((tokenv-1)&tokenv)) AddInst(0x87E0+__builtin_ctz(tokenv));
else if(!(tokenv&~0xFFFFL)) AddInst2(OP_INT16,tokenv);
else if((tokenv&0x80000000L) && -256<(Sint32)tokenv) AddInst(tokenv&0x01FF);
else AddInst(OP_INT32),AddInst2(tokenv>>16,tokenv);
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
AbbrevOp(OP_ADD,0x00);
AbbrevOp(OP_SUB,0x08);
AbbrevOp(OP_MUL,0x10);
AbbrevOp(OP_DIV,0x18);
AbbrevOp(OP_MOD,0x20);
AbbrevOp(OP_MUL_C,0x28);
AbbrevOp(OP_DIV_C,0x30);
AbbrevOp(OP_MOD_C,0x38);
AbbrevOp(OP_BAND,0x40);
AbbrevOp(OP_BOR,0x48);
AbbrevOp(OP_BXOR,0x50);
AbbrevOp(OP_LSH,0x58);
AbbrevOp(OP_RSH,0x60);
AbbrevOp(OP_RSH_C,0x68);
AbbrevOp(OP_EQ,0x70);
AbbrevOp(OP_NE,0x78);
AbbrevOp(OP_LT,0x80);
AbbrevOp(OP_GT,0x88);
AbbrevOp(OP_LE,0x90);
AbbrevOp(OP_GE,0x98);
AbbrevOp(OP_LT_C,0xA0);
AbbrevOp(OP_GT_C,0xA8);
AbbrevOp(OP_LE_C,0xB0);
AbbrevOp(OP_GE_C,0xB8);
AbbrevOp(OP_RET,0xE0);
case OP_DROP:
if(InstFlag(TF_DROP)) ChangeInst(+=0x2000);
else AddInst(OP_DROP);
break;
case OP_LOCAL:
if(!cla) ParseError("Cannot use local variable in a global definition\n");
tokenv=look_hash(hash,LOCAL_HASH_SIZE,0x2000,0x27FF,cl->uservars+0x2000,"user local variables")?:(cl->uservars++)+0x2000;
if(Tokenf(TF_EQUAL)) tokenv+=0x1000;
AddInst(tokenv);
break;
case OP_LABEL:
tokenv=look_hash(hash,LOCAL_HASH_SIZE,0x8000,0xFFFF,*labelptr,"labels");
if(!tokenv) tokenv=*labelptr,++*labelptr;
tokenv-=0x8000;
if(Tokenf(TF_COMMA)) {
AddInst2(OP_CALLSUB,labelptr[tokenv]);
} else if(Tokenf(TF_EQUAL)) {
AddInst2(OP_GOTO,labelptr[tokenv]);
} else {
if(labelptr[tokenv]!=0xFFFF) ParseError("Duplicate definition of label :%s\n",tokenstr);
labelptr[tokenv]=ptr;
peep=ptr;
break;
}
if(labelptr[tokenv]==0xFFFF) {
LabelStack*s=malloc(sizeof(LabelStack));
if(!s) fatal("Allocation failed\n");
s->id=tokenv|0x8000;
s->addr=ptr-1;
s->next=labelstack;
labelstack=s;
}
break;
case OP_IF:
AddInst(OP_IF);
FlowPush(OP_IF);
peep=++ptr;
break;
case OP_THEN:
FlowPop(OP_IF);
cl->codes[flowptr[flowdepth]]=peep=ptr;
break;
case OP_ELSE:
FlowPop(OP_IF);
x=flowptr[flowdepth];
AddInst(OP_GOTO);
FlowPush(OP_IF);
cl->codes[x]=peep=++ptr;
break;
case OP_EL:
AddInst(OP_GOTO);
y=++ptr;
FlowPop(OP_IF);
x=flowptr[flowdepth];
AddInst(OP_GOTO);
FlowPush(OP_IF);
cl->codes[x]=peep=++ptr;
flowptr[flowdepth-1]=y;
break;
case OP_BEGIN:
FlowPush(OP_BEGIN);
peep=ptr;
break;
case OP_AGAIN:
FlowPop(OP_BEGIN);
AddInst2(OP_GOTO,flowptr[flowdepth]);
break;
case OP_UNTIL:
FlowPop(OP_BEGIN);
AddInst2(OP_IF,flowptr[flowdepth]);
break;
case OP_WHILE:
AddInst(OP_IF);
FlowPush(OP_WHILE);
peep=++ptr;
break;
case OP_REPEAT:
FlowPop(OP_WHILE);
x=flowptr[flowdepth];
FlowPop(OP_BEGIN);
AddInst2(OP_GOTO,flowptr[flowdepth]);
cl->codes[x]=ptr;
break;
case OP_FOR:
if(cl->uservars>=0x07FF || num_globals>=0x07FF) ParseError("Too many user variables\n");
if(cla) x=cl->uservars++|0x2000; else x=num_globals++|0x2800;
AddInst2(OP_FOR,x);
FlowPush(OP_FOR);
peep=++ptr;
break;
case OP_NEXT:
FlowPop(OP_FOR);
AddInst(OP_NEXT);
cl->codes[flowptr[flowdepth]]=ptr;
break;
case OP_STRING:
AddInst2(OP_STRING,pool_string(tokenstr));
break;
default:
if(Tokenf(TF_ABNORMAL)) ParseError("Invalid instruction token\n");
if(compat && Tokenf(TF_COMPAT)) ++tokenv;
AddInstF(tokenv,tokent);
}
} else if(Tokenf(TF_FUNCTION)) {
AddInst2(OP_FUNCTION,tokenv&0x3FFF);
} else if(tokent==TF_OPEN) {
nxttok();
if(Tokenf(TF_MACRO) || !Tokenf(TF_NAME)) ParseError("Invalid parenthesized instruction\n");
switch(tokenv) {
case OP_POPUP:
nxttok();
if(tokent!=TF_INT || tokenv<0 || tokenv>32) ParseError("Expected number from 0 to 32");
if(tokenv) AddInst2(OP_POPUPARGS,tokenv); else AddInst(OP_POPUP);
nxttok();
if(tokent!=TF_CLOSE) ParseError("Unterminated (PopUp)\n");
break;
case OP_BROADCAST:
nxttok();
if(Tokenf(TF_MACRO) || !Tokenf(TF_NAME) || tokenv<0x4000 || tokenv>0x7FFF) ParseError("Class name expected\n");
AddInst2(OP_BROADCASTCLASS,tokenv-0x4000);
nxttok();
if(tokent!=TF_CLOSE) ParseError("Unterminated (Broadcast)\n");
break;
case OP_BIT:
x=0;
for(;;) {
nxttok();
if(tokent==TF_CLOSE) break;
if(Tokenf(TF_MACRO) || !Tokenf(TF_INT)) ParseError("Number or close parenthesis expected\n");
x|=1<<tokenv;
}
tokenv=x;
goto numeric;
default:
ParseError("Invalid parenthesized instruction\n");
}
} else if(tokent==TF_CLOSE) {
if(peep<ptr && cl->codes[ptr-1]==OP_RET) break;
if(peep<ptr && (cl->codes[ptr-1]&0xFF00)==0x1E00) break;
if(Inst8bit()) ChangeInst(+=0x1E00);
else AddInst(OP_RET);
break;
} else if(Tokenf(TF_EOF)) {
ParseError("Unexpected end of file\n");
} else {
ParseError("Invalid instruction token\n");
}
if(ptr>=0xFFEF) ParseError("Out of code space\n");
}
if(flowdepth) ParseError("Unterminated flow control blocks (%d levels)\n",flowdepth);
cl->codes=realloc(cl->codes,ptr*sizeof(Uint16))?:cl->codes;
return ptr;
}
static void dump_class(int cla,int endptr,const Hash*hash) {
const Class*cl=classes[cla];
int i,j;
if(!cl) return;
printf("<<<Class %d>>>\n",cla);
printf(" Name: %c%s\n",cla?'$':'(',cla?cl->name:"Global)");
printf(" Flags: 0x%02X 0x%04X\n",cl->cflags,cl->oflags);
printf(" Ht=%d Wt=%d Clm=%d Den=%d Vol=%d Str=%d Arr=%d Dep=%d\n",cl->height,cl->weight,cl->climb,cl->density,cl->volume,cl->strength,cl->arrivals,cl->departures);
printf(" Temp=%d M4=%d M5=%d M6=%d M7=%d Shape=%d Shov=%d Coll=%d Img=%d\n",cl->temperature,cl->misc4,cl->misc5,cl->misc6,cl->misc7,cl->shape,cl->shovable,cl->collisionLayers,cl->nimages);
printf(" Hard: %d %d %d %d\n",cl->hard[0],cl->hard[1],cl->hard[2],cl->hard[3]);
printf(" Sharp: %d %d %d %d\n",cl->sharp[0],cl->sharp[1],cl->sharp[2],cl->sharp[3]);
if(cl->nimages && cl->images) {
printf(" Images:");
for(i=0;i<cl->nimages;i++) printf(" %d%c",cl->images[i]&0x7FFF,cl->images[i]&0x8000?'*':'.');
putchar('\n');
}
if(cl->nmsg && cl->messages) {
printf(" Messages:\n");
for(i=0;i<cl->nmsg;i++) {
if(cl->messages[i]!=0xFFFF) {
if(i<256) printf(" %s: 0x%04X\n",standard_message_names[i],cl->messages[i]);
else printf(" #%s: 0x%04X\n",messages[i-256],cl->messages[i]);
}
}
}
if(hash && cl->uservars) {
printf(" Variables:\n");
for(i=0;i<LOCAL_HASH_SIZE;i++) {
if(hash[i].id>=0x2000 && hash[i].id<0x3000) printf(" %%%s = 0x%04X\n",hash[i].txt,hash[i].id);
}
}
if(endptr && cl->codes) {
printf(" Codes:");
for(i=0;i<endptr;i++) {
if(!(i&15)) printf("\n [%04X]",i);
printf(" %04X",cl->codes[i]);
}
putchar('\n');
}
printf("---\n\n");
}
static inline Uint32 class_def_number(void) {
Uint32 n;
nxttok();
if(!Tokenf(TF_INT)) fatal("Number expected\n");
n=tokenv;
nxttok();
if(tokent!=TF_CLOSE) fatal("Close parentheses expected\n");
return n;
}
static Uint32 class_def_misc(void) {
Uint32 n=0;
for(;;) {
nxttok();
if(tokent==TF_CLOSE) return n;
if(Tokenf(TF_INT)) {
n|=tokenv;
} else if(Tokenf(TF_NAME) && !(tokenv&~255)) {
n|=tokenv;
} else if(Tokenf(TF_NAME) && tokenv>=OP_BITCONSTANT && tokenv<=OP_BITCONSTANT_LAST) {
n|=1L<<(tokenv&31);
} else {
fatal("Number expected");
}
}
}
static Uint32 class_def_arrivals(void) {
Uint32 n=0;
int i;
nxttok();
if(Tokenf(TF_NAME) && tokenv==OP_INPLACE) {
nxttok();
if(tokent!=TF_CLOSE) ParseError("Close parentheses expected\n");
return 1<<12;
}
for(i=0;i<25;i++) {
if(!Tokenf(TF_INT) || (tokenv&~1)) ParseError("Expected 0 or 1\n");
if(tokenv) n|=1<<(i+4-2*(i%5));
nxttok();
}
if(tokent!=TF_CLOSE) ParseError("Close parentheses expected\n");
return n;
}
static void class_def_hard(Uint16*data) {
int i;
for(;;) {
nxttok();
if(tokent==TF_CLOSE) {
return;
} else if(tokent==TF_OPEN) {
nxttok();
if(!Tokenf(TF_DIR) || tokenv>7 || (tokenv&1)) ParseError("Expected even absolute direction\n");
i=tokenv>>1;
nxttok();
if(tokent!=TF_INT || (tokenv&~0xFFFF)) ParseError("Hardness/sharpness must be a 16-bit number\n");
data[i]=tokenv;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Close parentheses expected\n");
} else if(tokent==TF_INT) {
if(tokenv&~0xFFFF) ParseError("Hardness/sharpness must be a 16-bit number\n");
data[0]=data[1]=data[2]=data[3]=tokenv;
} else {
ParseError("Expected ( or ) or number\n");
}
}
}
static inline Uint8 class_def_shovable(void) {
Uint8 n=0;
nxttok();
if(tokent==TF_INT) {
n=tokenv;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Close parentheses expected\n");
return n;
}
for(;;) {
if(tokent==TF_CLOSE) return n;
if(!Tokenf(TF_DIR) || tokenv>7 || (tokenv&1)) ParseError("Expected even absolute direction\n");
n|=1<<tokenv;
nxttok();
}
}
static inline Uint8 class_def_shape(void) {
Uint8 n=0;
int i;
for(;;) {
nxttok();
if(tokent==TF_CLOSE) {
return n;
} else if(tokent==TF_OPEN) {
nxttok();
if(!Tokenf(TF_DIR) || tokenv>7 || (tokenv&1)) ParseError("Expected even absolute direction\n");
i=tokenv;
n&=~(3<<i);
nxttok();
if(tokent!=TF_INT || (tokenv&~3)) ParseError("Shape must be 0, 1, 2, or 3\n");
n|=tokenv<<i;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Close parentheses expected\n");
} else if(tokent==TF_INT) {
if(tokenv&~3) ParseError("Shape must be 0, 1, 2, or 3\n");
n=tokenv*0x55;
} else {
ParseError("Expected ( or ) or number\n");
}
}
}
static char*class_def_help(void) {
char*txt=malloc(0x3000);
int n=0;
int i;
for(;;) {
nxttok();
if(tokent==TF_CLOSE) break;
if(!Tokenf(TF_NAME) || tokenv!=OP_STRING) ParseError("String expected\n");
i=strlen(tokenstr);
if(i+n>=0x2FFA) ParseError("Help text is too long\n");
strcpy(txt+n,tokenstr);
n+=i;
txt[n++]=10;
txt[n]=0;
}
if(!n) {
free(txt);
return 0;
}
txt[n]=0;
return realloc(txt,n+1)?:txt;
}
static void class_def_image(int cla) {
Class*cl=classes[cla];
Uint16*img=malloc(256*sizeof(Uint16));
sqlite3_stmt*st;
if(cl->nimages || cl->images) ParseError("Duplicate (Image) block\n");
if(!img) fatal("Allocation failed\n");
if(userdb && sqlite3_prepare_v2(userdb,"SELECT `ID` FROM `PICTURES` WHERE `NAME` = ?1;",-1,&st,0)) fatal("SQL error: %s\n",sqlite3_errmsg(userdb));
for(;;) {
nxttok();
if(tokent==TF_CLOSE) break;
if(cl->nimages==255) ParseError("Too many images in class\n");
if(!Tokenf(TF_NAME) || tokenv!=OP_STRING) ParseError("String expected\n");
if(userdb) {
sqlite3_bind_text(st,1,tokenstr,-1,0);
if(sqlite3_step(st)==SQLITE_ROW) {
img[cl->nimages++]=sqlite3_column_int(st,0)|0x8000;
} else {
ParseError("A picture named \"%s\" does not exist\n",tokenstr);
}
sqlite3_reset(st);
sqlite3_clear_bindings(st);
} else {
img[cl->nimages++]=0;
}
}
if(userdb) sqlite3_finalize(st);
if(!cl->nimages) {
free(img);
return;
}
cl->images=realloc(img,cl->nimages*sizeof(Uint16))?:img;
}
static void class_def_defaultimage(int cla) {
Class*cl=classes[cla];
int i;
for(i=0;i<cl->nimages;i++) cl->images[i]&=0x7FFF;
for(;;) {
nxttok();
if(tokent==TF_OPEN) {
nxttok();
if(tokent==TF_INT) {
if(tokenv<0 || tokenv>=cl->nimages) ParseError("Image number out of range\n");
i=tokenv;
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(tokenv<i) ParseError("Backward range in (DefaultImage) block\n");
if(tokenv>=cl->nimages) ParseError("Image number out of range\n");
while(i<=tokenv) cl->images[i++]|=0x8000;
} else if(tokent!=TF_CLOSE) {
ParseError("Number expected\n");
}
} else if(tokent==TF_CLOSE) {
break;
} else if(tokent==TF_INT) {
if(tokenv<0 || tokenv>=cl->nimages) ParseError("Image number out of range\n");
cl->images[tokenv]|=0x8000;
} else {
ParseError("Expected ( or ) or number\n");
}
}
}
static void class_definition(int cla,sqlite3_stmt*vst) {
Hash*hash=calloc(LOCAL_HASH_SIZE,sizeof(Hash));
Class*cl=classes[cla];
int ptr=0;
int compat=0;
int i;
if(!hash) fatal("Allocation failed\n");
if(!cl) fatal("Confusion of class definition somehow\n");
if(cl->cflags&(CF_NOCLASS1|CF_NOCLASS2)) {
cl->cflags=0;
} else {
ParseError("Duplicate definition of class $%s\n",cl->name);
}
begin_label_stack();
for(;;) {
nxttok();
if(Tokenf(TF_EOF)) {
ParseError("Unexpected end of file\n");
} else if(Tokenf(TF_MACRO)) {
ParseError("Unexpected macro token\n");
} else if(Tokenf(TF_OPEN)) {
nxttok();
if(Tokenf(TF_NAME)) {
switch(tokenv) {
case OP_IMAGE:
class_def_image(cla);
break;
case OP_DEFAULTIMAGE:
class_def_defaultimage(cla);
break;
case OP_HELP:
if(cl->gamehelp) ParseError("Duplicate (Help) block\n");
cl->gamehelp=class_def_help();
break;
case OP_EDITORHELP:
if(cl->edithelp) ParseError("Duplicate (EditorHelp) block\n");
cl->edithelp=class_def_help();
break;
case OP_HEIGHT:
cl->height=class_def_number();
break;
case OP_WEIGHT:
cl->weight=class_def_number();
break;
case OP_CLIMB:
cl->climb=class_def_number();
break;
case OP_DENSITY:
cl->density=class_def_number();
break;
case OP_VOLUME:
cl->volume=class_def_number();
break;
case OP_STRENGTH:
cl->strength=class_def_number();
break;
case OP_TEMPERATURE:
cl->temperature=class_def_number();
break;
case OP_MISC4:
cl->misc4=class_def_misc();
break;
case OP_MISC5:
cl->misc5=class_def_misc();
break;
case OP_MISC6:
cl->misc6=class_def_misc();
break;
case OP_MISC7:
cl->misc7=class_def_misc();
break;
case OP_ARRIVALS:
cl->arrivals=class_def_arrivals();
break;
case OP_DEPARTURES:
cl->departures=class_def_arrivals();
break;
case OP_HARD:
class_def_hard(cl->hard);
break;
case OP_SHARP:
class_def_hard(cl->sharp);
break;
case OP_SHAPE:
cl->shape=class_def_shape();
break;
case OP_SHOVABLE:
cl->shovable=class_def_shovable();
break;
case OP_SUBS:
ptr=parse_instructions(cla,ptr,hash,compat);
break;
case OP_LABEL:
pushback=1;
ptr=parse_instructions(cla,ptr,hash,compat);
break;
case 0x0200 ... 0x02FF:
set_message_ptr(cla,tokenv&255,ptr);
ptr=parse_instructions(cla,ptr,hash,compat);
break;
case 0xC000 ... 0xFFFF:
set_message_ptr(cla,tokenv+256-0xC000,ptr);
ptr=parse_instructions(cla,ptr,hash,compat);
break;
default: ParseError("Invalid directly inside of a class definition\n");
}
} else {
ParseError("Invalid directly inside of a class definition\n");
}
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
case OP_PLAYER: cl->cflags|=CF_PLAYER; break;
case OP_INPUT: cl->cflags|=CF_INPUT; break;
case OP_COMPATIBLE: cl->cflags|=CF_COMPATIBLE; compat=1; break;
case OP_COMPATIBLE_C: cl->cflags|=CF_COMPATIBLE; break;
case OP_QUIZ: cl->cflags|=CF_QUIZ; break;
case OP_INVISIBLE: cl->oflags|=OF_INVISIBLE; break;
case OP_VISUALONLY: cl->oflags|=OF_VISUALONLY; break;
case OP_STEALTHY: cl->oflags|=OF_STEALTHY; break;
case OP_USERSTATE: cl->oflags|=OF_USERSTATE; break;
case OP_SHOVABLE: cl->shovable=0x55; break;
default: ParseError("Invalid directly inside of a class definition\n");
}
} else if(Tokenf(TF_CLOSE)) {
break;
} else {
ParseError("Invalid directly inside of a class definition\n");
}
}
end_label_stack(cl->codes,hash);
if(!cl->nimages) cl->oflags|=OF_INVISIBLE;
if(main_options['C']) dump_class(cla,ptr,hash);
if(main_options['H']) {
for(i=0;i<LOCAL_HASH_SIZE;i++) if(hash[i].id) printf(" \"%s\": %04X\n",hash[i].txt,hash[i].id);
}
for(i=0;i<LOCAL_HASH_SIZE;i++) {
if(vst && hash[i].id>=0x2000 && hash[i].id<0x2800) {
sqlite3_reset(vst);
sqlite3_bind_int(vst,1,(hash[i].id&0x07FF)|(cla<<16));
sqlite3_bind_text(vst,2,hash[i].txt,-1,free);
while(sqlite3_step(vst)==SQLITE_ROW);
} else {
free(hash[i].txt);
}
}
free(hash);
}
static void load_class_numbers(void) {
int i,n;
long size=0;
unsigned char*data=read_lump(FIL_LEVEL,LUMP_CLASS_DEF,&size,0);
unsigned char*p;
if(!data) return;
for(i=0;i<size-3;) {
n=data[i]|(data[i+1]<<8);
if(!n) break;
if(n>=0x4000) fatal("Malformed CLASS.DEF lump\n");
i+=2;
p=data+i;
while(i<size && data[i++]);
if(i==size && data[i-1]) fatal("Malformed CLASS.DEF lump\n");
initialize_class(n,CF_NOCLASS2,p);
}
i+=2;
for(;i<size-3;) {
n=data[i]|(data[i+1]<<8);
if(n<256 || n>=0x4100) fatal("Malformed CLASS.DEF lump\n");
n-=256;
i+=2;
p=data+i;
while(i<size && data[i++]);
if(i==size && data[i-1]) fatal("Malformed CLASS.DEF lump\n");
if(messages[n]) fatal("Duplicate message number %d\n",n+256);
messages[n]=strdup(p);
if(!messages[n]) fatal("Allocation failed\n");
}
free(data);
}
void load_classes(void) {
int i;
int gloptr=0;
Hash*glolocalhash;
char*nam=sqlite3_mprintf("%s.class",basefilename);
sqlite3_stmt*vst=0;
fprintf(stderr,"Loading class definitions...\n");
if(!nam) fatal("Allocation failed\n");
classfp=fopen(nam,"r");
sqlite3_free(nam);
if(!classfp) fatal("Cannot open class file '%s': %m\n",nam);
glohash=calloc(HASH_SIZE,sizeof(Hash));
if(!glohash) fatal("Allocation failed\n");
glolocalhash=calloc(LOCAL_HASH_SIZE,sizeof(Hash));
if(!glolocalhash) fatal("Allocation failed\n");
strcpy(tokenstr,"+"); glohash[look_hash_mac()].id=MAC_ADD;
strcpy(tokenstr,"-"); glohash[look_hash_mac()].id=MAC_SUB;
strcpy(tokenstr,"*"); glohash[look_hash_mac()].id=MAC_MUL;
strcpy(tokenstr,"/"); glohash[look_hash_mac()].id=MAC_DIV;
strcpy(tokenstr,"mod"); glohash[look_hash_mac()].id=MAC_MOD;
strcpy(tokenstr,"band"); glohash[look_hash_mac()].id=MAC_BAND;
strcpy(tokenstr,"bor"); glohash[look_hash_mac()].id=MAC_BOR;
strcpy(tokenstr,"bxor"); glohash[look_hash_mac()].id=MAC_BXOR;
strcpy(tokenstr,"bnot"); glohash[look_hash_mac()].id=MAC_BNOT;
strcpy(tokenstr,"cat"); glohash[look_hash_mac()].id=MAC_CAT;
strcpy(tokenstr,"bit"); glohash[look_hash_mac()].id=MAC_BIT;
strcpy(tokenstr,"version"); glohash[look_hash_mac()].id=MAC_VERSION;
strcpy(tokenstr,"define"); glohash[look_hash_mac()].id=MAC_DEFINE;
strcpy(tokenstr,"include"); glohash[look_hash_mac()].id=MAC_INCLUDE;
strcpy(tokenstr,"call"); glohash[look_hash_mac()].id=MAC_CALL;
if(main_options['L']) {
for(;;) {
nxttok();
printf("** %5d %04X %08X \"",linenum,tokent,tokenv);
for(i=0;tokenstr[i];i++) {
if(tokenstr[i]<32 || tokenstr[i]>126) printf("<%02X>",tokenstr[i]&255);
else putchar(tokenstr[i]);
}
printf("\"\n");
if(Tokenf(TF_EOF)) goto done;
}
}
*classes=malloc(sizeof(Class));
if(!*classes) fatal("Allocation failed\n");
classes[0]->name=classes[0]->edithelp=classes[0]->gamehelp=0;
classes[0]->codes=classes[0]->messages=classes[0]->images=0;
classes[0]->nmsg=0;
memset(functions,-1,sizeof(functions));
load_class_numbers();
if(userdb && (i=sqlite3_prepare_v2(userdb,"INSERT INTO `VARIABLES`(`ID`,`NAME`) VALUES(?1,?2);",-1,&vst,0))) fatal("SQL error (%d): %s\n",i,sqlite3_errmsg(userdb));
for(;;) {
nxttok();
if(tokent==TF_EOF) goto done;
if(tokent!=TF_OPEN) ParseError("Expected open parenthesis\n");
nxttok();
if(Tokenf(TF_FUNCTION)) {
functions[tokenv&0x3FFF]=gloptr;
begin_label_stack();
gloptr=parse_instructions(0,gloptr,glolocalhash,0);
end_label_stack(classes[0]->codes,glolocalhash);
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
case 0x4000 ... 0x7FFF: // Class definition
class_definition(tokenv-0x4000,vst);
break;
case 0x0200 ... 0x02FF: case 0xC000 ... 0xFFFF: // Default message handler
begin_label_stack();
set_message_ptr(0,tokenv&0x8000?(tokenv&0x3FFF)+256:tokenv-0x0200,gloptr);
gloptr=parse_instructions(0,gloptr,glolocalhash,0);
end_label_stack(classes[0]->codes,glolocalhash);
break;
case 0x2800 ... 0x2FFF: // Define initial values of global variables
i=tokenv-0x2800;
nxttok();
if(tokent==TF_CLOSE) break;
initglobals[i]=parse_constant_value();
nxttok();
if(tokent!=TF_CLOSE) ParseError("Expected close parenthesis\n");
break;
case OP_BACKGROUND:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(tokenv&~255) ParseError("Background color out of range\n");
back_color=tokenv;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Expected close parenthesis\n");
break;
case OP_ANIMATE:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
if(tokenv<1 || tokenv>256) ParseError("Number of max animation steps out of range\n");
max_animation=tokenv;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Expected close parenthesis\n");
break;
case OP_VOLUME:
nxttok();
if(tokent!=TF_INT) ParseError("Number expected\n");
max_volume=tokenv;
nxttok();
if(tokent!=TF_CLOSE) ParseError("Expected close parenthesis\n");
break;
default:
ParseError("Invalid top level definition: %s\n",tokenstr);
}
} else {
ParseError("Invalid top level definition\n");
}
}
done:
fclose(classfp);
if(main_options['C']) dump_class(0,gloptr,glolocalhash);
if(main_options['H']) {
for(i=0;i<HASH_SIZE;i++) if(glohash[i].id) printf("\"%s\": %04X\n",glohash[i].txt,glohash[i].id);
for(i=0;i<LOCAL_HASH_SIZE;i++) if(glolocalhash[i].id) printf(" \"%s\": %04X\n",glolocalhash[i].txt,glolocalhash[i].id);
}
for(i=0;i<LOCAL_HASH_SIZE;i++) free(glolocalhash[i].txt);
free(glolocalhash);
for(i=0;i<num_functions;i++) if(functions[i]==0xFFFF) {
int j;
for(j=0;j<HASH_SIZE;j++) if(glohash[j].id==i+0x8000) fatal("Function &%s mentioned but not defined\n",glohash[j].txt);
fatal("Function mentioned but not defined\n");
}
for(i=0;i<HASH_SIZE;i++) {
if(vst && glohash[i].id>=0x2800 && glohash[i].id<0x3000) {
sqlite3_reset(vst);
sqlite3_bind_int(vst,1,glohash[i].id&0x07FF);
sqlite3_bind_text(vst,2,glohash[i].txt,-1,free);
while(sqlite3_step(vst)==SQLITE_ROW);
} else {
free(glohash[i].txt);
}
}
if(vst) sqlite3_finalize(vst);
free(glohash);
for(i=1;i<undef_class;i++) if(classes[i] && (classes[i]->cflags&CF_NOCLASS1)) fatal("Class $%s mentioned but not defined\n",classes[i]->name);
if(macros) for(i=0;i<MAX_MACRO;i++) if(macros[i]) free_macro(macros[i]);
free(macros);
fprintf(stderr,"Done\n");
}