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Emit error messages on stderr.

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This commit is contained in:
Simon Forman
2023-02-14 17:52:52 -08:00
parent eca5e41cc9
commit db322b0b3b
1 changed files with 18 additions and 18 deletions
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implementations/C/joy.c
+18 -18
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@@ -161,7 +161,7 @@ pop_any(JoyListPtr stack)
{
JoyList result;
if (!(*stack)) {
printf("Not enough values on stack.\n");
fprintf(stderr, "Not enough values on stack.\n");
longjmp(jbuf, 1);
}
result = *stack;
@@ -178,7 +178,7 @@ pop_int(JoyListPtr stack)
case joyInt:
return &(node->head->value.i);
default:
printf("Not an integer.\n");
fprintf(stderr, "Not an integer.\n");
longjmp(jbuf, 1);
}
}
@@ -195,7 +195,7 @@ pop_bool(JoyListPtr stack)
case joyFalse:
return 0;
default:
printf("Not a Boolean value.\n");
fprintf(stderr, "Not a Boolean value.\n");
longjmp(jbuf, 1);
}
}
@@ -210,7 +210,7 @@ pop_list_node(JoyListPtr stack)
case joyList:
return node;
default:
printf("Not a list.\n");
fprintf(stderr, "Not a list.\n");
longjmp(jbuf, 1);
}
}
@@ -373,14 +373,14 @@ parse_list(char **text)
/* NULL string input? */
if (NULL == *text) {
printf("Missing ']' bracket. A\n");
fprintf(stderr, "Missing ']' bracket. A\n");
longjmp(jbuf, 1);
};
*text = trim_leading_blanks(*text);
if (NULL == *text) {
printf("Missing ']' bracket. B\n");
fprintf(stderr, "Missing ']' bracket. B\n");
longjmp(jbuf, 1);
};
@@ -393,7 +393,7 @@ parse_list(char **text)
*/
if (NULL == rest) {
printf("Missing ']' bracket. C\n");
fprintf(stderr, "Missing ']' bracket. C\n");
longjmp(jbuf, 1);
};
@@ -461,10 +461,10 @@ parse_node(char **text)
return make_list_node(parse_list(text));
}
if (']' == rest[0]) {
printf("Extra ']' bracket.\n");
fprintf(stderr, "Extra ']' bracket.\n");
longjmp(jbuf, 1);
}
printf("Should be unreachable.");
fprintf(stderr, "Should be unreachable.");
exit(1);
}
@@ -522,12 +522,12 @@ next_term(JoyListPtr expression)
JoyList quote;
JoyTypePtr term;
if (!(*expression)) {
printf("Do not call next_term on an empty expression.\n");
fprintf(stderr, "Do not call next_term on an empty expression.\n");
exit(1);
}
quote = pop_list(expression);
if (!quote) {
printf("How did an empty list get onto the expression!?\n");
fprintf(stderr, "How did an empty list get onto the expression!?\n");
exit(1);
}
term = quote->head;
@@ -577,7 +577,7 @@ lshift(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
JoyList node;
b = pop_int(stack);
if (-1 == mpz_sgn(*b)) {
printf("Negative shift count.\n");
fprintf(stderr, "Negative shift count.\n");
longjmp(jbuf, 1);
}
a = pop_int(stack);
@@ -595,7 +595,7 @@ rshift(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
JoyList node;
b = pop_int(stack);
if (-1 == mpz_sgn(*b)) {
printf("Negative shift count.\n");
fprintf(stderr, "Negative shift count.\n");
longjmp(jbuf, 1);
}
a = pop_int(stack);
@@ -684,7 +684,7 @@ void
pop(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
{
if (!(*stack)) {
printf("Cannot pop empty stack.\n");
fprintf(stderr, "Cannot pop empty stack.\n");
longjmp(jbuf, 1);
}
pop_any(stack);
@@ -732,7 +732,7 @@ first(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
{
JoyList quote = pop_list(stack);
if (!quote) {
printf("Cannot take first of empty list.\n");
fprintf(stderr, "Cannot take first of empty list.\n");
longjmp(jbuf, 1);
}
push_thing(quote->head, stack);
@@ -744,7 +744,7 @@ rest(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
{
JoyList quote = pop_list(stack);
if (!quote) {
printf("Cannot take rest of empty list.\n");
fprintf(stderr, "Cannot take rest of empty list.\n");
longjmp(jbuf, 1);
}
push_quote(quote->tail, stack);
@@ -801,7 +801,7 @@ truthy(JoyListPtr stack, __attribute__((unused)) JoyListPtr expression)
}
break;
default:
printf("Cannot Boolify.\n");
fprintf(stderr, "Cannot Boolify.\n");
longjmp(jbuf, 1);
}
}
@@ -859,7 +859,7 @@ dispatch(char *sym, JoyListPtr stack, JoyListPtr expression)
push_quote_onto_expression(s->body, expression);
return;
}
printf("Unknown: %s\n", sym);
fprintf(stderr, "Unknown: %s\n", sym);
longjmp(jbuf, 1);
}