void exec(Pystat stat){
Arg arg0 = stat->args[0];
Arg arg1 = stat->args[1];
switch(stat->op){
case Y_PUSH: {
exec_push(arg0.ival, pc+1); // num_objects
break;
}
case Y_GOTO: {
exec_goto(arg0.ival); // absolute line
break;
}
case Y_POP: {
exec_pop();
break;
}
case Y_NEW: {
exec_new(arg0.ival); // obj size
break;
}
case Y_NEWS: {
exec_news(arg0.ival); // obj size
break;
}
case Y_LDC: {
exec_ldc(arg0.ival);
break;
}
case Y_LDI: {
exec_ldi(arg0.ival);
break;
}
case Y_LDR: {
exec_ldr(arg0.rval);
break;
}
case Y_LDS: {
exec_lds(arg0.sval);
break;
}
case Y_LOD: {
exec_lod(arg0.ival); // oid
break;
}
case Y_GLOD: {
exec_glod(arg0.ival); // oid
break;
}
case Y_CAT: {
exec_cat(arg0.ival, arg1.ival); // num fields, record/array size
break;
}
case Y_LDA: {
exec_lda(arg0.ival); // oid
break;
}
case Y_GLDA: {
exec_glda(arg0.ival); // oid
break;
}
case Y_FDA: {
exec_fda(arg0.ival); // field offset
break;
}
case Y_EIL: {
exec_eil(arg0.ival); // field size, embedded
break;
}
case Y_SIL: {
exec_sil(arg0.ival); // field size, on stack
break;
}
case Y_IXA: {
exec_ixa(arg0.ival); // elem size
break;
}
case Y_STO: {
exec_sto(arg0.ival); // oid
break;
}
case Y_GSTO: {
exec_gsto(arg0.ival); // oid
break;
}
case Y_IST: {
exec_ist(); // indirect store
break;
}
case Y_JMF: {
exec_jmf(arg0.ival); // offset
break;
}
case Y_JMP: {
exec_jmp(arg0.ival); // offset
break;
}
case Y_EQU: {
exec_equ(); // for all types of objects
break;
}
case Y_NEQ: {
exec_neq(); // for all types of objects
break;
}
case Y_IGT: {
exec_igt();
break;
}
case Y_IGE: {
exec_ige();
break;
}
case Y_ILT: {
exec_ilt();
break;
}
case Y_ILE: {
exec_ile();
break;
}
case Y_RGT: {
exec_rgt();
break;
}
case Y_RGE: {
exec_rge();
break;
}
case Y_RLT: {
exec_rlt();
break;
}
case Y_RLE: {
exec_rle();
break;
}
case Y_SGT: {
exec_sgt();
break;
}
case Y_SGE: {
exec_sge();
break;
}
case Y_SLT: {
exec_slt();
break;
}
case Y_SLE: {
exec_sle();
break;
}
case Y_IPLUS: {
exec_iplus();
break;
}
case Y_IMINUS: {
exec_iminus();
break;
}
case Y_ITIMES: {
exec_itimes();
break;
}
case Y_IDIV: {
exec_idiv();
break;
}
case Y_RPLUS: {
exec_rplus();
break;
}
case Y_RMINUS: {
exec_rminus();
break;
}
case Y_RTIMES: {
exec_rtimes();
break;
}
case Y_RDIV: {
exec_rdiv();
break;
}
case Y_IUMI: {
exec_iumi();
break;
}
case Y_RUMI: {
exec_rumi();
break;
}
case Y_NEG: {
exec_neg();
break;
}
case Y_WR: {
exec_wr(arg0.sval, 1, stdout); // schema
break;
}
case Y_FWR: {
exec_fwr(arg0.sval); // schema
break;
}
case Y_RD: {
exec_rd(arg0.sval, 1, stdin); // schema
break;
}
case Y_FRD: {
exec_frd(arg0.sval); // schema
break;
}
case Y_TOINT: {
exec_toint();
break;
}
case Y_TOINTUP: {
exec_tointup();
break;
}
case Y_TOREAL: {
exec_toreal();
break;
}
case Y_READ: {
exec_read(arg0.ival, arg1.sval, 1, stdin); // oid, schema
break;
}
case Y_GREAD: {
exec_gread(arg0.ival, arg1.sval, 1, stdin); // oid, schema
break;
}
case Y_FREAD: {
exec_fread(arg0.ival, arg1.sval); // oid, schema
break;
}
case Y_GFREAD: {
exec_gfread(arg0.ival, arg1.sval); // oid, schema
break;
}
case Y_WRITE: {
exec_write(arg0.sval); // schema
break;
}
case Y_FWRITE: {
exec_fwrite(arg0.sval); // schema
break;
}
case Y_TDUP: {
exec_tdup();
break;
}
case Y_TPOP: {
exec_tpop(arg0.ival); // num objects
break;
}
case Y_MODULE: {
// nothing to do here, the instruction is useless
break;
}
case Y_RETURN: {
exec_return();
break;
}
default: {
machine_error("Unknown instruction.");
break;
}
}
}
int run_program(char* p_buf){
int i;
// I REMOVED THIS AND PUT IT IN FRONT OF THE CALL...
//NMS-REMOVAL init_namespace();// Do you need it? May be you want to use the same namespace
prog = p_buf;
scan_labels(); /* find the labels in the program */
ftos = 0; /* initialize the FOR stack index */
gtos = 0; /* initialize the GOSUB stack index */
do {
bas_token_type = get_token();
// printf("ttype=%d bas_tok=%d <%s>\n", bas_token_type, bas_tok, bas_token);
/* check for assignment statement */
if(bas_token_type==VARIABLE) {
putback(); /* return the var to the input stream */
assignment(); /* must be assignment statement */
}
else /* is command */
switch(bas_tok) {
case PRINT:
print();
break;
case GOTO:
exec_goto();
break;
case IF:
exec_if();
break;
case FOR:
exec_for();
break;
case NEXT:
next();
break;
case INPUT:
input();
break;
case GOSUB:
gosub();
break;
case RETURN:
greturn();
break;
case COMMENT:
do{
get_token();
if(bas_tok==EOL || bas_tok==FINISHED) break;
} while (1==1);
break;
case CONTINUE:
do{
get_token();
if(bas_tok==EOL || bas_tok==FINISHED) break;
} while (1==1);
break;
case END:
printf("variables----------------------------%s\n","");
for (i=0;i<varnamelast;i++){
printf("%14s - %19.7f\n", varname[i] , variables[i] );
}
exit(0);
}
} while (bas_tok != FINISHED);
return 0;
}// run_program
