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debugger: Display values of reference variables

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Previously, the debugger displayed `ref int` variables like this:

    ref_int: <unsupported-data-type>
    <void>: <unsupported-data-type>

This commit introduces `dbg_variable_to_string()` to dereference these
variables and display their underlying value. Both the command-line and
DAP debugger interfaces have been updated to use this new functionality.
This commit is contained in:
kichikuou
2025-09-28 11:11:24 +09:00
parent 6f661fb370
commit 729957b842
4 changed files with 56 additions and 15 deletions
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src/debugger_cmd.c
+9 -3
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@@ -126,7 +126,9 @@ static void dbg_cmd_locals(unsigned nr_args, char **args)
struct page *page = heap_get_page(call_stack[call_stack_ptr - (frame_no+1)].page_slot);
struct ain_function *f = &ain->functions[page->index];
for (int i = 0; i < f->nr_vars; i++) {
struct string *value = dbg_value_to_string(&f->vars[i].type, page->values[i], 1);
if (f->vars[i].type.data == AIN_VOID)
continue;
struct string *value = dbg_variable_to_string(&f->vars[i].type, page, i, 1);
printf("[%d] %s: %s\n", i, display_sjis0(f->vars[i].name), display_sjis1(value->text));
free_string(value);
}
@@ -138,7 +140,9 @@ static void log_handler(struct breakpoint *bp)
struct page *locals = local_page();
printf("%s(", display_sjis0(f->name));
for (int i = 0; i < f->nr_args; i++) {
struct string *value = dbg_value_to_string(&f->vars[i].type, locals->values[i], 1);
if (f->vars[i].type.data == AIN_VOID)
continue;
struct string *value = dbg_variable_to_string(&f->vars[i].type, locals, i, 1);
printf(i > 0 ? ", %s" : "%s", display_sjis0(value->text));
free_string(value);
}
@@ -175,7 +179,9 @@ static void dbg_cmd_members(unsigned nr_args, char **args)
assert(page->nr_vars == s->nr_members);
for (int i = 0; i < s->nr_members; i++) {
struct string *value = dbg_value_to_string(&s->members[i].type, page->values[i], 1);
if (s->members[i].type.data == AIN_VOID)
continue;
struct string *value = dbg_variable_to_string(&s->members[i].type, page, i, 1);
printf("[%d] %s: %s\n", i, display_sjis0(s->members[i].name), display_sjis1(value->text));
free_string(value);
}