Remove frog from the repository.

frog/await/awaitc.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-// Separate entrypoint for the frog compiler with experimental support for the
-// 'await' keyword.
-
-#import('../lang.dart');
-#import('../minfrog.dart', prefix:'minfrog');
-#source('nodeset.dart');
-#source('checker.dart');
-#source('normalizer.dart');
-#source('transformation.dart');
-
-/**
- * The main entry point method - needed to ensure we handle correctly await
- * expressions within main.
- */
-Member _mainMethod;
-
-/**
- * A phase in the compilation process that processes the entire AST and
- * desugars await expressions.
- */
-awaitTransformation() {
-  _mainMethod =
-      world.findMainMethod(world.getOrAddLibrary(options.dartScript));
-  for (var lib in world.libraries.getValues()) {
-    for (var type in lib.types.getValues()) {
-      for (var member in type.members.getValues()) {
-        _process(member);
-      }
-      for (var member in type.constructors.getValues()) {
-        _process(member);
-      }
-    }
-  }
-}
-
-/** Analyze and transform a single member (method or property). */
-_process(Member member) {
-  if (member.isConstructor || member.isMethod) {
-    _processFunction(member.definition);
-  } else if (member.isProperty) {
-    PropertyMember p = member;
-    if (p.getter != null) _process(p.getter);
-    if (p.setter != null) _process(p.setter);
-  }
-}
-
-/** Analyze and transform a function definition and nested definitions. */
-_processFunction(FunctionDefinition func) {
-  AwaitChecker checker = new AwaitChecker();
-
-  // Run checker that collects nested functions and which nodes may contain
-  // await expressions.
-  func.visit(checker);
-
-  // Rewrite nested asynchronous functions first.
-  for (FunctionDefinition f in checker.nestedFunctions) {
-    _processFunction(f);
-  }
-
-  if (checker.haveAwait.contains(func)) {
-    // Normalize
-    func.visit(new AwaitNormalizer(checker.haveAwait));
-    // Re-run the checker to derive appropriate node information (this
-    // makes the normalizer simpler as we don't have to keep track of this
-    // information).
-    checker = new AwaitChecker();
-    func.visit(checker);
-
-    // Transform the code.
-    func.visit(new AwaitProcessor(checker.haveAwait));
-  }
-}
-
-/** Run frog, setting the await transformation correctly. */
-void main() {
-  experimentalAwaitPhase = () {
-    world.withTiming('remove await expressions', awaitTransformation);
-  };
-  minfrog.main();
-}