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Fix if/ifelse. Add showstack. Change @idx.

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antirez 2022-12-22 10:40:31 +01:00
parent 03e6c46d7c
commit b2dec63b4b
1 changed files with 15 additions and 7 deletions
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22
aocla.c
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@ -839,7 +839,7 @@ int procIf(aoclactx *ctx) {
ifbranch = stackPop(ctx);
cond = stackPop(ctx);
while(w) {
while(1) {
/* Evaluate the conditional program. */
if (eval(ctx,cond)) goto rterr;
if (checkStackType(ctx,1,OBJ_TYPE_BOOL)) goto rterr;
@ -849,13 +849,13 @@ int procIf(aoclactx *ctx) {
/* Now eval the true or false branch depending on the
* result. */
if (res) {
if (res) { /* True branch (if, ifelse, while). */
if (eval(ctx,ifbranch)) goto rterr;
} else if (e) {
if (w) continue;
} else if (e) { /* False branch (ifelse). */
if (eval(ctx,elsebranch)) goto rterr;
} else if (w) {
break; /* If while condition is false, break the loop. */
}
break;
}
retval = 0; /* Success. */
@ -924,13 +924,13 @@ int procListAppend(aoclactx *ctx) {
}
/* @idx -- get element at index:
* (list index) => (list element)
* (list index) => (element)
*
* TODO: this should work for strings as well. */
int procListGetAt(aoclactx *ctx) {
if (checkStackType(ctx,2,OBJ_TYPE_LIST,OBJ_TYPE_INT)) return 1;
obj *idx = stackPop(ctx);
obj *list = stackPeek(ctx,0);
obj *list = stackPop(ctx);
int i = idx->i;
if (i < 0) i = list->l.len+i; /* -1 is last element, and so forth. */
release(idx);
@ -940,6 +940,13 @@ int procListGetAt(aoclactx *ctx) {
stackPush(ctx,list->l.ele[i]);
retain(list->l.ele[i]);
}
release(list);
return 0;
}
/* Show the current stack. Useful for debugging. */
int procShowStack(aoclactx *ctx) {
stackShow(ctx);
return 0;
}
@ -965,6 +972,7 @@ void loadLibrary(aoclactx *ctx) {
addProc(ctx,"->",procListAppend,NULL);
addProc(ctx,"<-",procListAppend,NULL);
addProc(ctx,"get@",procListGetAt,NULL);
addProc(ctx,"showstack",procShowStack,NULL);
addProcString(ctx,"dup","[(x) $x $x]");
addProcString(ctx,"swap","[(x y) $y $x]");
addProcString(ctx,"drop","[(_)]");