MacroArg.fromJson constructor
MacroArg.fromJson(
- Object? json_
Returns a new instance from a JSON value. May throw if the value does not have the expected structure.
Implementation
factory MacroArg.fromJson(Object? json_) {
final json = json_ is Map
? _spec.fields.map((f) => json_[f.label]).toList(growable: false)
: json_;
return switch (json) {
[final name, final defaultExpr] ||
(final name, final defaultExpr) =>
MacroArg(
name: Ident.fromJson(name),
defaultExpr:
Option.fromJson(defaultExpr, (some) => Expr.fromJson(some)).value,
),
_ => throw Exception('Invalid JSON $json_')
};
}