#if 0
gcc -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 globals[0x800];
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;
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;
#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_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;
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;
}
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(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(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;
}
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,"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(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;
}
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:
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_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);
}
}
}
}
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");
}
#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))
static int parse_instructions(int cla,int ptr,Hash*hash) {
int peep=ptr;
int prflag=0;
Class*cl=classes[cla];
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)) {
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
default:
if(Tokenf(TF_ABNORMAL)) ParseError("Invalid instruction token\n");
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) {
default:
ParseError("Invalid parenthesized instruction\n");
}
} else if(tokent==TF_CLOSE) {
if(peep<ptr && cl->codes[ptr-1]<0x0100) cl->codes[ptr-1]+=0x1E00;
else AddInst(OP_RET);
break;
} else {
ParseError("Invalid instruction token\n");
}
if(ptr>=0xFFEF) ParseError("Out of code space\n");
}
cl->codes=realloc(cl->codes,ptr*sizeof(Uint16))?:cl->codes;
return ptr;
}
void load_classes(void) {
int i;
int gloptr=0;
Hash*glolocalhash;
char*nam=sqlite3_mprintf("%s.class",basefilename);
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,"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));
for(;;) {
nxttok();
if(tokent==TF_EOF) goto done;
if(tokent!=TF_OPEN) ParseError("Expected open parenthesis\n");
nxttok();
if(Tokenf(TF_FUNCTION)) {
} else if(Tokenf(TF_NAME)) {
switch(tokenv) {
case 0x4000 ... 0x7FFF: // Class definition
break;
case 0x0200 ... 0x02FF: case 0xC000 ... 0xFFFF: // Default message handler
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['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++) 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++) free(glohash[i].txt);
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);
}