1 // Copyright 2009 the V8 project authors. All rights reserved.
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"
32
33 namespace v8 {
34 namespace internal {
35
36
PushEnclosingName(Handle<String> name)37 void FuncNameInferrer::PushEnclosingName(Handle<String> name) {
38 // Enclosing name is a name of a constructor function. To check
39 // that it is really a constructor, we check that it is not empty
40 // and starts with a capital letter.
41 if (name->length() > 0 && Runtime::IsUpperCaseChar(
42 Isolate::Current()->runtime_state(), name->Get(0))) {
43 names_stack_.Add(name);
44 }
45 }
46
47
PushLiteralName(Handle<String> name)48 void FuncNameInferrer::PushLiteralName(Handle<String> name) {
49 if (IsOpen() && !HEAP->prototype_symbol()->Equals(*name)) {
50 names_stack_.Add(name);
51 }
52 }
53
54
PushVariableName(Handle<String> name)55 void FuncNameInferrer::PushVariableName(Handle<String> name) {
56 if (IsOpen() && !HEAP->result_symbol()->Equals(*name)) {
57 names_stack_.Add(name);
58 }
59 }
60
61
MakeNameFromStack()62 Handle<String> FuncNameInferrer::MakeNameFromStack() {
63 if (names_stack_.is_empty()) {
64 return FACTORY->empty_string();
65 } else {
66 return MakeNameFromStackHelper(1, names_stack_.at(0));
67 }
68 }
69
70
MakeNameFromStackHelper(int pos,Handle<String> prev)71 Handle<String> FuncNameInferrer::MakeNameFromStackHelper(int pos,
72 Handle<String> prev) {
73 if (pos >= names_stack_.length()) {
74 return prev;
75 } else {
76 Handle<String> curr = FACTORY->NewConsString(dot_, names_stack_.at(pos));
77 return MakeNameFromStackHelper(pos + 1, FACTORY->NewConsString(prev, curr));
78 }
79 }
80
81
InferFunctionsNames()82 void FuncNameInferrer::InferFunctionsNames() {
83 Handle<String> func_name = MakeNameFromStack();
84 for (int i = 0; i < funcs_to_infer_.length(); ++i) {
85 funcs_to_infer_[i]->set_inferred_name(func_name);
86 }
87 funcs_to_infer_.Rewind(0);
88 }
89
90
91 } } // namespace v8::internal
92