codefu@google.com
5613c66865
This replaced the following CL that was falling behind head. http://codereview.chromium.org/8566022/ Summary: Add support for function runtime type checking and typedefs; re-worked to support tree-shaking at head. Static, instance, top level, and hoisted methods have RTT lookup methods to identify their types. Respective getters() and binds() have been updated or added to link the lookup methods to bounded methods. Static method getters were added as well to perform this linking for non-bound situations. BUG= TEST= Review URL: http://codereview.chromium.org//8845002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@2263 260f80e4-7a28-3924-810f-c04153c831b5
88 lines
3.6 KiB
Java
88 lines
3.6 KiB
Java
// Copyright 2011, the Dart 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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package com.google.dart.compiler.backend.js;
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import com.google.dart.compiler.backend.js.ast.JsName;
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import com.google.dart.compiler.backend.js.ast.JsProgram;
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import com.google.dart.compiler.backend.js.ast.JsScope;
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import com.google.dart.compiler.common.Symbol;
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import com.google.dart.compiler.resolver.ClassElement;
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import com.google.dart.compiler.resolver.ElementKind;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* A helper class for managing global names.
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* @author johnlenz@google.com (John Lenz)
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*/
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class JsNameProvider {
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private final DartMangler mangler;
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private Map<Symbol, JsName> names = new HashMap<Symbol, JsName>();
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private JsScope globalScope;
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JsNameProvider(JsProgram program, DartMangler mangler) {
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this.globalScope = program.getScope();
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this.mangler = mangler;
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}
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/**
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* Returns the JsName for the given element. If the element is global and
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* hasn't been declared yet, it is done now.
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*/
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JsName getName(Symbol symbol) {
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JsName jsName = names.get(symbol);
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if (jsName != null) {
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assert !jsName.getShortIdent().equals("Object$Dart");
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return jsName;
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}
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assert ElementKind.of(symbol).equals(ElementKind.CLASS)
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|| ElementKind.of(symbol).equals(ElementKind.FUNCTION_TYPE_ALIAS)
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: "Only classes or typedefs can be lazily declared. Undeclared: "
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+ symbol.getOriginalSymbolName();
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ClassElement classElement = (ClassElement) symbol;
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String name = classElement.getName();
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String nativeName = classElement.getNativeName();
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if (nativeName == null) {
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String mangledClassName = mangler.mangleClassName(classElement);
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jsName = globalScope.declareName(mangledClassName, mangledClassName, name);
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} else {
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jsName = globalScope.declareName(nativeName);
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}
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// Class names are globally accessible.
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jsName.setObfuscatable(false);
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names.put(symbol, jsName);
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assert !jsName.getShortIdent().equals("Object$Dart") : "unexpected " + ((ClassElement) symbol).getNode().getSource().getName();
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return jsName;
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}
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void setName(Symbol symbol, JsName name) {
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names.put(symbol, name);
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}
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}
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