3c2a7bdf21
Currently function name inference is wired with AST optimization pass to avoid introducing another pass over AST. A better solution would be to rewrite AST visitors so they can be naturally combined together in a single pass, as their current implementation doesn't allow it. For examples of cases where function names can be inferred, see the tests file. Review URL: http://codereview.chromium.org/62146 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1696 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
75 lines
2.8 KiB
C++
75 lines
2.8 KiB
C++
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "ast.h"
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#include "func-name-inferrer.h"
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namespace v8 { namespace internal {
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void FuncNameInferrer::PushEnclosingName(Handle<String> name) {
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// Enclosing name is a name of a constructor function. To check
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// that it is really a constructor, we check that it is not empty
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// and starts with a capital letter.
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if (name->length() > 0 && Runtime::IsUpperCaseChar(name->Get(0))) {
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names_stack_.Add(name);
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}
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}
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Handle<String> FuncNameInferrer::MakeNameFromStack() {
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if (names_stack_.is_empty()) {
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return Factory::empty_string();
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} else {
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return MakeNameFromStackHelper(1, names_stack_.at(0));
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}
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}
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Handle<String> FuncNameInferrer::MakeNameFromStackHelper(int pos,
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Handle<String> prev) {
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if (pos >= names_stack_.length()) {
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return prev;
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} else {
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Handle<String> curr = Factory::NewConsString(dot_, names_stack_.at(pos));
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return MakeNameFromStackHelper(pos + 1, Factory::NewConsString(prev, curr));
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}
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}
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void FuncNameInferrer::MaybeInferFunctionName() {
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if (func_to_infer_ != NULL) {
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func_to_infer_->set_inferred_name(MakeNameFromStack());
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func_to_infer_ = NULL;
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}
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}
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} } // namespace v8::internal
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