comptime eval

compiler/parser/parser.odin

@@ -914,7 +914,7 @@ is_simple_range_bound :: proc(expr: ast.Expr) -> bool {
 
 prefix_binding_power :: proc(kind: token.Kind) -> (right: int, ok: bool) {
 	#partial switch kind {
-	case .Minus, .Ampersand, .Bang, .Keyword_Try:
+	case .Minus, .Ampersand, .Bang, .Dollar, .Keyword_Try:
 		return 20, true
 	}
 	return 0, false
@@ -931,24 +931,38 @@ parse_expression_bp :: proc(parser: ^Parser, minimum_binding_power, nesting: int
 	left := ast.INVALID_EXPR
 	if right_power, ok := prefix_binding_power(current(parser).kind); ok {
 		operator := advance(parser)
-		if parser.delimiter_depth > 0 {
-			skip_newlines(parser)
+		if operator.kind == .Dollar && current(parser).kind == .Left_Brace {
+			body := parse_block(parser)
+			end := previous(parser)
+			left = add_expr(parser, ast.Expr{
+				kind = .Comptime,
+				span = span_from(operator.span, end.span),
+				body = body,
+				left = ast.INVALID_EXPR,
+				right = ast.INVALID_EXPR,
+				diagnostic = source.INVALID_DIAGNOSTIC,
+			})
+		} else {
+			if parser.delimiter_depth > 0 {
+				skip_newlines(parser)
+			}
+			operand := parse_expression_bp(parser, right_power, nesting+1)
+			operand_expr := parser.module.exprs[operand]
+			prefix_kind := ast.Expr_Kind.Negate
+			#partial switch operator.kind {
+			case .Ampersand:   prefix_kind = .Address
+			case .Bang:        prefix_kind = .Not
+			case .Dollar:      prefix_kind = .Comptime
+			case .Keyword_Try: prefix_kind = .Try
+			}
+			left = add_expr(parser, ast.Expr{
+				kind = prefix_kind,
+				span = span_from(operator.span, operand_expr.span),
+				left = operand,
+				right = ast.INVALID_EXPR,
+				diagnostic = source.INVALID_DIAGNOSTIC,
+			})
 		}
-		operand := parse_expression_bp(parser, right_power, nesting+1)
-		operand_expr := parser.module.exprs[operand]
-		prefix_kind := ast.Expr_Kind.Negate
-		#partial switch operator.kind {
-		case .Ampersand: prefix_kind = .Address
-		case .Bang:      prefix_kind = .Not
-		case .Keyword_Try: prefix_kind = .Try
-		}
-		left = add_expr(parser, ast.Expr{
-			kind=prefix_kind,
-			span=span_from(operator.span, operand_expr.span),
-			left=operand,
-			right=ast.INVALID_EXPR,
-			diagnostic=source.INVALID_DIAGNOSTIC,
-		})
 	} else {
 		left = parse_primary(parser, nesting)
 	}