Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 4 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 5 | #include "src/v8.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 7 | #include "src/ast.h" |
| 8 | #include "src/ast-value-factory.h" |
| 9 | #include "src/func-name-inferrer.h" |
| 10 | #include "src/list-inl.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 11 | |
| 12 | namespace v8 { |
| 13 | namespace internal { |
| 14 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 15 | FuncNameInferrer::FuncNameInferrer(AstValueFactory* ast_value_factory, |
| 16 | Zone* zone) |
| 17 | : ast_value_factory_(ast_value_factory), |
| 18 | entries_stack_(10, zone), |
| 19 | names_stack_(5, zone), |
| 20 | funcs_to_infer_(4, zone), |
| 21 | zone_(zone) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 22 | } |
| 23 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 24 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 25 | void FuncNameInferrer::PushEnclosingName(const AstRawString* name) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 26 | // Enclosing name is a name of a constructor function. To check |
| 27 | // that it is really a constructor, we check that it is not empty |
| 28 | // and starts with a capital letter. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 29 | if (!name->IsEmpty() && unibrow::Uppercase::Is(name->FirstCharacter())) { |
| 30 | names_stack_.Add(Name(name, kEnclosingConstructorName), zone()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 31 | } |
| 32 | } |
| 33 | |
| 34 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | void FuncNameInferrer::PushLiteralName(const AstRawString* name) { |
| 36 | if (IsOpen() && name != ast_value_factory_->prototype_string()) { |
| 37 | names_stack_.Add(Name(name, kLiteralName), zone()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 38 | } |
| 39 | } |
| 40 | |
| 41 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | void FuncNameInferrer::PushVariableName(const AstRawString* name) { |
| 43 | if (IsOpen() && name != ast_value_factory_->dot_result_string()) { |
| 44 | names_stack_.Add(Name(name, kVariableName), zone()); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 45 | } |
| 46 | } |
| 47 | |
| 48 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 49 | const AstString* FuncNameInferrer::MakeNameFromStack() { |
| 50 | return MakeNameFromStackHelper(0, ast_value_factory_->empty_string()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 51 | } |
| 52 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 53 | const AstString* FuncNameInferrer::MakeNameFromStackHelper( |
| 54 | int pos, const AstString* prev) { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 55 | if (pos >= names_stack_.length()) return prev; |
| 56 | if (pos < names_stack_.length() - 1 && |
| 57 | names_stack_.at(pos).type == kVariableName && |
| 58 | names_stack_.at(pos + 1).type == kVariableName) { |
| 59 | // Skip consecutive variable declarations. |
| 60 | return MakeNameFromStackHelper(pos + 1, prev); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 61 | } else { |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 62 | if (prev->length() > 0) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | const AstRawString* name = names_stack_.at(pos).name; |
| 64 | if (prev->length() + name->length() + 1 > String::kMaxLength) return prev; |
| 65 | const AstConsString* curr = ast_value_factory_->NewConsString( |
| 66 | ast_value_factory_->dot_string(), name); |
| 67 | curr = ast_value_factory_->NewConsString(prev, curr); |
| 68 | return MakeNameFromStackHelper(pos + 1, curr); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 69 | } else { |
| 70 | return MakeNameFromStackHelper(pos + 1, names_stack_.at(pos).name); |
| 71 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 72 | } |
| 73 | } |
| 74 | |
| 75 | |
| 76 | void FuncNameInferrer::InferFunctionsNames() { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 77 | const AstString* func_name = MakeNameFromStack(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 78 | for (int i = 0; i < funcs_to_infer_.length(); ++i) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 79 | funcs_to_infer_[i]->set_raw_inferred_name(func_name); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 80 | } |
| 81 | funcs_to_infer_.Rewind(0); |
| 82 | } |
| 83 | |
| 84 | |
| 85 | } } // namespace v8::internal |