Allow setting breakpoints in literal function initializers of fields.

runtime/vm/parser.cc

 // Copyright (c) 2012, 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.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED_RUNTIME
 
 #include "lib/invocation_mirror.h"
@@ skipping 965 matching lines @@
     const Script& script = Script::Handle(zone, cls.script());
     const Library& lib = Library::Handle(zone, cls.library());
     Parser parser(script, lib, cls.token_pos());
     parser.ParseEnumDefinition(cls);
   }
   const int64_t num_tokes_after = STAT_VALUE(thread, num_tokens_consumed);
   INC_STAT(thread, num_class_tokens, num_tokes_after - num_tokes_before);
 }
 
 
+bool Parser::FieldHasFunctionLiteralInitializer(const Field& field,
+                                                TokenPosition* start,
+                                                TokenPosition* end) {
+  if (!field.has_initializer()) {
+    return false;
+  }
+  Thread* thread = Thread::Current();
+  Zone* zone = thread->zone();
+  const Class& cls = Class::Handle(zone, field.Owner());
+  const Script& script = Script::Handle(zone, cls.script());
+  const Library& lib = Library::Handle(zone, cls.library());
+  Parser parser(script, lib, field.token_pos());
+  return parser.GetFunctionLiteralInitializerRange(field, start, end);
+}
+
+bool Parser::GetFunctionLiteralInitializerRange(const Field& field,
+                                                TokenPosition* start,
+                                                TokenPosition* end) {
+  ASSERT(field.has_initializer());
+  // Since |field| has an initializer, skip until '='.
+  while (CurrentToken() != Token::kASSIGN) {
+    ConsumeToken();
+  }
+  // Skip past the '=' as well.
+  ConsumeToken();
+
+  *start = TokenPos();
+  if (IsFunctionLiteral()) {
+    SkipExpr();
+    *end = PrevTokenPos();
+    return true;
+  }
+
+  return false;
+}
+
+
 RawObject* Parser::ParseFunctionParameters(const Function& func) {
   ASSERT(!func.IsNull());
   LongJumpScope jump;
   if (setjmp(*jump.Set()) == 0) {
     Thread* thread = Thread::Current();
     StackZone stack_zone(thread);
     Zone* zone = stack_zone.GetZone();
     const Script& script = Script::Handle(zone, func.script());
     const Class& owner = Class::Handle(zone, func.Owner());
     ASSERT(!owner.IsNull());
@@ skipping 7194 matching lines @@
   // The local scope of the parsed function can be pruned, since contained
   // variables are not relevant for the compilation of the enclosing function.
   // This pruning is done by omitting to hook the local scope in its parent
   // scope in the constructor of LocalScope.
   AstNode* closure =
       new (Z) ClosureNode(function_pos, function, NULL,
                           statements != NULL ? statements->scope() : NULL);
 
   ASSERT(innermost_function_.raw() == function.raw());
   innermost_function_ = function.parent_function();
-
   return is_literal ? closure : new (Z) StoreLocalNode(
                                     function_pos, function_variable, closure);
 }
 
 
 // Returns true if the current and next tokens can be parsed as type
 // parameters. Current token position is not saved and restored.
 bool Parser::TryParseTypeParameters() {
   ASSERT(CurrentToken() == Token::kLT);
   int nesting_level = 0;
@@ skipping 7044 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED_RUNTIME