hl-valdemar
9932750e21
Use typed singleton arrays for braceless arm blocks: &[statement] compiled but trapped under the Bro bootstrap.
106 lines
3.5 KiB
Plaintext
106 lines
3.5 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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expected_type,
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type_not_value,
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invalid_void_type,
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type_mismatch,
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invalid_operand,
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integer_division,
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not_callable,
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argument_count_mismatch,
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cannot_infer_type,
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missing_return,
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return_type_mismatch,
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condition_not_bool,
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missing_entry,
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invalid_entry,
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literal_out_of_range,
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invalid_escape,
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read_before_initialization,
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initialization_cycle,
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integer_overflow,
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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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message proc(code Code) []u8 {
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return match code {
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.invalid_character: "invalid character"
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.float_must_end_with_digit: "float literal must end with a digit"
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.unterminated_string: "unterminated string literal"
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.unexpected_token: "unexpected token"
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.duplicate_name: "duplicate name or forbidden shadowing"
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.unknown_name: "unknown name"
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.expected_type: "annotation must name a type"
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.type_not_value: "type name cannot be used as a value"
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.invalid_void_type: "void cannot be stored or used as a parameter type"
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.type_mismatch: "incompatible value type"
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.invalid_operand: "operator requires compatible operand types"
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.integer_division: "division requires float operands"
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.not_callable: "value is not callable"
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.argument_count_mismatch: "argument count does not match the function signature"
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.cannot_infer_type: "cannot infer a type without a type anchor"
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.missing_return: "nonvoid function can finish without returning a value"
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.return_type_mismatch: "return does not match the function result type"
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.condition_not_bool: "if condition must have type bool"
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.missing_entry: "program requires a main function"
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.invalid_entry: "main must be a function with no parameters"
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.literal_out_of_range: "numeric literal is outside its runtime type's range"
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.invalid_escape: "invalid string escape"
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.read_before_initialization: "local value was read before initialization"
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.initialization_cycle: "global initialization cycle"
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.integer_overflow: "integer arithmetic overflow"
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}
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}
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