99 lines
2.6 KiB
Dart
99 lines
2.6 KiB
Dart
part of 'router.dart';
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/// Represents a virtual location within an application.
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class Route<T> {
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final String method;
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final String path;
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final Map<String, Map<String, dynamic>> _cache = {};
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final RouteDefinition? _routeDefinition;
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final List<T> handlers;
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String? name;
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Parser<RouteResult>? _parser;
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Route(this.path, {required this.method, required this.handlers})
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: _routeDefinition = RouteGrammar.routeDefinition
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.parse(SpanScanner(path.replaceAll(_straySlashes, '')))
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.value {
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if (_routeDefinition?.segments.isNotEmpty != true) {
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_parser = match('').map((r) => RouteResult({}));
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}
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/*
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var result = RouteGrammar.routeDefinition
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.parse(SpanScanner(path.replaceAll(_straySlashes, '')));
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if (result.value != null) {
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//throw ArgumentError('[Route] Failed to create route for $path');
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_routeDefinition = result.value;
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if (_routeDefinition.segments.isEmpty) {
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_parser = match('').map((r) => RouteResult({}));
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}
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} else {
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_parser = match('').map((r) => RouteResult({}));
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}
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*/
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}
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factory Route.join(Route<T> a, Route<T> b) {
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var start = a.path.replaceAll(_straySlashes, '');
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var end = b.path.replaceAll(_straySlashes, '');
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return Route('$start/$end'.replaceAll(_straySlashes, ''),
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method: b.method, handlers: b.handlers);
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}
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//List<T> get handlers => _handlers;
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Parser<RouteResult>? get parser => _parser ??= _routeDefinition?.compile();
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@override
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String toString() {
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return '$method $path => $handlers';
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}
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Route<T> clone() {
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return Route<T>(path, method: method, handlers: handlers)
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.._cache.addAll(_cache);
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}
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String makeUri(Map<String, dynamic> params) {
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var b = StringBuffer();
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var i = 0;
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if (_routeDefinition != null) {
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for (var seg in _routeDefinition.segments) {
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if (i++ > 0) b.write('/');
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if (seg is ConstantSegment) {
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b.write(seg.text);
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} else if (seg is ParameterSegment) {
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if (!params.containsKey(seg.name)) {
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throw ArgumentError('Missing parameter "${seg.name}".');
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}
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b.write(params[seg.name]);
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}
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}
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}
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return b.toString();
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}
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}
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/// The result of matching an individual route.
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class RouteResult {
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/// The parsed route parameters.
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final Map<String, dynamic> params;
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/// Optional. An explicit "tail" value to set.
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String? get tail => _tail;
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String? _tail;
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RouteResult(this.params, {String? tail}) : _tail = tail;
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void _setTail(String? v) => _tail ??= v;
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/// Adds parameters.
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void addAll(Map<String, dynamic> map) {
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params.addAll(map);
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}
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}
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