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honey/source/diagnostics/diagnostics.hon
T

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import "@std/mem"
import "@std/arraylist"
Span :: struct {
start u32
end u32
}
DiagnosticId :: distinct u32
NO_DIAGNOSTIC :: maxval!(DiagnosticId)
Code :: enum {
invalid_character,
float_must_end_with_digit,
unterminated_string,
unexpected_token,
}
Diagnostic :: struct {
code Code
span Span
}
Store :: struct { list arraylist.ArrayList(Diagnostic) }
CapacityError :: enum { diagnostic_limit_reached }
init proc(allocator mem.Allocator) Store {
return Store{ list = arraylist.init(allocator) }
}
deinit proc(store @mut Store) void {
arraylist.deinit(&store.list)
}
add proc(store @mut Store, code Code, span Span) DiagnosticId ! (mem.AllocError | CapacityError) {
if (store.list.items.len >= usize(NO_DIAGNOSTIC)) return .diagnostic_limit_reached
id :: DiagnosticId(store.list.items.len)
try arraylist.append(&store.list, Diagnostic{ code = code, span = span })
return id
}
get proc(store @Store, id DiagnosticId) ?Diagnostic {
if (usize(id) >= store.list.items.len) return null
return store.list.items[usize(id)]
}
count proc(store @Store) usize {
return store.list.items.len
}