57 lines
1.5 KiB
Plaintext
57 lines
1.5 KiB
Plaintext
import "@std/mem"
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import "@std/arraylist"
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Span :: struct {
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start u32
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end u32
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}
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DiagnosticId :: distinct u32
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no_diagnostic :: maxval!(DiagnosticId)
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Code :: enum {
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invalid_character,
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float_must_end_with_digit,
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unterminated_string,
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unexpected_token,
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duplicate_name,
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unknown_name,
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}
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Diagnostic :: struct {
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code Code
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span Span
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}
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#! owns diagnostic storage and retains its allocator; release with deinit.
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Store :: struct { list arraylist.ArrayList(Diagnostic) }
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CapacityError :: enum { diagnostic_limit_reached }
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#! retains `allocator` for added diagnostics; the caller owns the returned Store.
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init proc(allocator mem.Allocator) Store {
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return Store{ list = arraylist.init(allocator) }
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}
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#! releases diagnostic storage with the retained allocator.
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deinit proc(store @mut Store) void {
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arraylist.deinit(&store.list)
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}
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#! allocates from the retained allocator; the returned ID is valid until deinit.
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add proc(store @mut Store, code Code, span Span) DiagnosticId ! (mem.AllocError | CapacityError) {
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if (store.list.items.len >= usize(no_diagnostic)) return .diagnostic_limit_reached
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id :: DiagnosticId(store.list.items.len)
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try arraylist.append(&store.list, Diagnostic{ code = code, span = span })
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return id
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}
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get proc(store @Store, id DiagnosticId) ?Diagnostic {
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if (usize(id) >= store.list.items.len) return null
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return store.list.items[usize(id)]
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}
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count proc(store @Store) usize {
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return store.list.items.len
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}
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