Fix avoid_types_as_parameter_names linter errors.

Author: renggli

lib/src/core/parser.dart

@@ -136,7 +136,7 @@ abstract class Parser<R> {
   @internal
   @nonVirtual
   @preferInline
-  T captureResultGeneric<T>(T Function<R>(Parser<R> self) callback) =>
+  T captureResultGeneric<T>(T Function<S>(Parser<S> self) callback) =>
       callback<R>(this);
 
   @override

lib/src/debug/profile.dart

@@ -37,7 +37,7 @@ Parser<R> profile<R>(
   Predicate<Parser>? predicate,
 }) {
   final frames = <ProfileFrame>[];
-  return transformParser(root, <R>(parser) {
+  return transformParser(root, <P>(parser) {
     if (predicate == null || predicate(parser)) {
       final frame = _ProfileFrame(parser);
       frames.add(frame);

lib/src/debug/progress.dart

@@ -38,7 +38,7 @@ Parser<R> progress<R>(
   Parser<R> root, {
   VoidCallback<ProgressFrame> output = print,
   Predicate<Parser>? predicate,
-}) => transformParser(root, <R>(parser) {
+}) => transformParser(root, <P>(parser) {
   if (predicate == null || predicate(parser)) {
     return parser.callCC((continuation, context) {
       output(_ProgressFrame(parser, context));

lib/src/debug/trace.dart

@@ -45,7 +45,7 @@ Parser<R> trace<R>(
   Predicate<Parser>? predicate,
 }) {
   TraceEvent? parent;
-  return transformParser(root, <R>(parser) {
+  return transformParser(root, <P>(parser) {
     if (predicate == null || predicate(parser)) {
       return parser.callCC((continuation, context) {
         final currentParent = parent;

lib/src/reflection/optimize.dart

@@ -37,9 +37,9 @@ Parser<R> optimize<R>(
   final selectedRules = rules ?? allOptimizerRules;
   final replacements = <Parser, Parser>{};
   for (final parser in analyzer.parsers) {
-    parser.captureResultGeneric(<R>(parser) {
+    parser.captureResultGeneric(<P>(parser) {
       for (final rule in selectedRules) {
-        rule.run<R>(analyzer, parser, (a, b) {
+        rule.run<P>(analyzer, parser, (a, b) {
           if (callback != null) callback(a, b);
           replacements[a] = b;
         });

test/utils/assertions.dart

@@ -18,7 +18,7 @@ void expectParserInvariants<T>(Parser<T> parser) {
     expect(copy, isParserDeepEqual(parser));
   });
   test('transform', () {
-    final copy = transformParser(parser, <T>(parser) => parser);
+    final copy = transformParser(parser, <P>(parser) => parser);
     expect(copy, isNot(same(parser)));
     expect(copy.toString(), parser.toString());
     expect(copy.runtimeType, parser.runtimeType);