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Overview
Comment:More class loading code
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 9d448767e434ec04a33a4335cbda3918fd813d9c
User & Date: user on 2018-05-27 22:33:21
Other Links: manifest | tags
Context
2018-06-03
22:43
The syntax of for/next loops has been changed; also added some codes for dealing with user cache data check-in: 8b26cd42e7 user: user tags: trunk
2018-05-27
22:33
More class loading code check-in: 9d448767e4 user: user tags: trunk
2018-05-19
22:31
Add shell script to compile everything; support $CFLAGS and $EXE environment variables check-in: f833310c79 user: user tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified class.c from [8167e45e03] to [d60d73f095].

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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,








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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,
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  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)) {








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  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)) {
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    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;








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    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;
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      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))
#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


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) {
        AbbrevOp(OP_ADD,0x00);
        AbbrevOp(OP_SUB,0x08);
        AbbrevOp(OP_MUL,0x10);
        AbbrevOp(OP_DIV,0x18);
        AbbrevOp(OP_MOD,0x20);








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      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 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&~0xFF)) AddInst(tokenv);
      else if(!((tokenv-1)&tokenv)) AddInst(0x87E0+__builtin_ctz(tokenv));
      else if(!(tokenv&~0xFFFF)) AddInst2(OP_INT16,tokenv);
      else if(-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);
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        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);

        case OP_DROP:
          if(InstFlag(TF_DROP)) ChangeInst(+=0x2000);
          else AddInst(OP_DROP);
          break;




















































































        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(Inst8bit()) ChangeInst(+=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");








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        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_NEXT:
          FlowPop(OP_FOR);
          AddInst(OP_NEXT);
          cl->codes[flowptr[flowdepth]]=ptr;
          break;
        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) {
        case OP_FOR:
          nxttok();
          if(Tokenf(TF_MACRO|TF_EQUAL) || !Tokenf(TF_NAME)) ParseError("Global or local variable expected\n");
          if(tokenv==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;
          } else if(tokenv<0x2000 || tokenv>0x2FFF) {
            ParseError("Global or local variable expected\n");
          }
          AddInst2(OP_FOR,tokenv);
          FlowPush(OP_FOR);
          peep=++ptr;
          nxttok();
          if(tokent!=TF_CLOSE) ParseError("Unterminated (for)\n");
          break;
        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(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 class_definition(int cla) {
  
}

void load_classes(void) {
  int i;
  int gloptr=0;
  Hash*glolocalhash;
  char*nam=sqlite3_mprintf("%s.class",basefilename);
  if(!nam) fatal("Allocation failed\n");
︙︙
940
941
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946
947



948
949
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953
954



955
956
957
958
959
960
961

  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();








|
>
>
>



|


|
>
>
>








1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
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1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159

  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)) {
      functions[tokenv&0x3FFF]=gloptr;
      begin_label_stack();
      gloptr=parse_instructions(0,gloptr,glolocalhash);
      end_label_stack(classes[0]->codes,glolocalhash);
    } else if(Tokenf(TF_NAME)) {
      switch(tokenv) {
        case 0x4000 ... 0x7FFF: // Class definition
          class_definition(tokenv-0x4000);
          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);
          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();
︙︙

Modified heromesh.h from [6804915000] to [a6cc7a9107].

︙︙
94
95
96
97
98
99
100

101
102
103
104
105
106
107

extern const char*messages[0x4000]; // index is 256 less than message number
extern Uint16 functions[0x4000];
extern int max_animation; // max steps in animation queue (default 32)
extern Sint32 max_volume; // max total volume to allow moving diagonally (default 10000)
extern Uint8 back_color;
extern char**stringpool;


void load_classes(void);

// == bindings ==

typedef struct {
  char cmd;
  union {








>








94
95
96
97
98
99
100
101
102
103
104
105
106
107
108

extern const char*messages[0x4000]; // index is 256 less than message number
extern Uint16 functions[0x4000];
extern int max_animation; // max steps in animation queue (default 32)
extern Sint32 max_volume; // max total volume to allow moving diagonally (default 10000)
extern Uint8 back_color;
extern char**stringpool;

Uint16 get_message_ptr(int c,int m);
void load_classes(void);

// == bindings ==

typedef struct {
  char cmd;
  union {
︙︙

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