fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "ast.h" |
| 31 | #include "func-name-inferrer.h" |
fschneider@chromium.org | fb144a0 | 2011-05-04 12:43:48 +0000 | [diff] [blame] | 32 | #include "list-inl.h" |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 33 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 34 | namespace v8 { |
| 35 | namespace internal { |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 36 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 37 | FuncNameInferrer::FuncNameInferrer(Isolate* isolate, Zone* zone) |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 38 | : isolate_(isolate), |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 39 | entries_stack_(10, zone), |
| 40 | names_stack_(5, zone), |
| 41 | funcs_to_infer_(4, zone), |
| 42 | zone_(zone) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 43 | } |
| 44 | |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 45 | |
| 46 | void FuncNameInferrer::PushEnclosingName(Handle<String> name) { |
| 47 | // Enclosing name is a name of a constructor function. To check |
| 48 | // that it is really a constructor, we check that it is not empty |
| 49 | // and starts with a capital letter. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 50 | if (name->length() > 0 && Runtime::IsUpperCaseChar( |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 51 | isolate()->runtime_state(), name->Get(0))) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 52 | names_stack_.Add(Name(name, kEnclosingConstructorName), zone()); |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 53 | } |
| 54 | } |
| 55 | |
| 56 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 57 | void FuncNameInferrer::PushLiteralName(Handle<String> name) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 58 | if (IsOpen() && !isolate()->heap()->prototype_string()->Equals(*name)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 59 | names_stack_.Add(Name(name, kLiteralName), zone()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 60 | } |
| 61 | } |
| 62 | |
| 63 | |
| 64 | void FuncNameInferrer::PushVariableName(Handle<String> name) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 65 | if (IsOpen() && !isolate()->heap()->result_string()->Equals(*name)) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 66 | names_stack_.Add(Name(name, kVariableName), zone()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 67 | } |
| 68 | } |
| 69 | |
| 70 | |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 71 | Handle<String> FuncNameInferrer::MakeNameFromStack() { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 72 | return MakeNameFromStackHelper(0, isolate()->factory()->empty_string()); |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | |
| 76 | Handle<String> FuncNameInferrer::MakeNameFromStackHelper(int pos, |
| 77 | Handle<String> prev) { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 78 | if (pos >= names_stack_.length()) return prev; |
| 79 | if (pos < names_stack_.length() - 1 && |
| 80 | names_stack_.at(pos).type == kVariableName && |
| 81 | names_stack_.at(pos + 1).type == kVariableName) { |
| 82 | // Skip consecutive variable declarations. |
| 83 | return MakeNameFromStackHelper(pos + 1, prev); |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 84 | } else { |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 85 | if (prev->length() > 0) { |
| 86 | Factory* factory = isolate()->factory(); |
| 87 | Handle<String> curr = factory->NewConsString( |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 88 | factory->dot_string(), names_stack_.at(pos).name); |
ager@chromium.org | 04921a8 | 2011-06-27 13:21:41 +0000 | [diff] [blame] | 89 | return MakeNameFromStackHelper(pos + 1, |
| 90 | factory->NewConsString(prev, curr)); |
| 91 | } else { |
| 92 | return MakeNameFromStackHelper(pos + 1, names_stack_.at(pos).name); |
| 93 | } |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 94 | } |
| 95 | } |
| 96 | |
| 97 | |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 98 | void FuncNameInferrer::InferFunctionsNames() { |
| 99 | Handle<String> func_name = MakeNameFromStack(); |
| 100 | for (int i = 0; i < funcs_to_infer_.length(); ++i) { |
| 101 | funcs_to_infer_[i]->set_inferred_name(func_name); |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 102 | } |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 103 | funcs_to_infer_.Rewind(0); |
kasperl@chromium.org | d1e3e72 | 2009-04-14 13:38:25 +0000 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | |
| 107 | } } // namespace v8::internal |