Remove backends.

compiler/java/com/google/dart/compiler/backend/js/ast/JsProgram.java

Index: compiler/java/com/google/dart/compiler/backend/js/ast/JsProgram.java
diff --git a/compiler/java/com/google/dart/compiler/backend/js/ast/JsProgram.java b/compiler/java/com/google/dart/compiler/backend/js/ast/JsProgram.java
deleted file mode 100644
index 1d2c902d27a04703709bf078ee5c3db91c8e5614..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/backend/js/ast/JsProgram.java
+++ /dev/null
@@ -1,172 +0,0 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-package com.google.dart.compiler.backend.js.ast;
-
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A JavaScript program.
- */
-public final class JsProgram extends JsNode {
-
-  private final JsStatement debuggerStmt;
-  private final JsEmpty emptyStmt;
-  private final JsBooleanLiteral falseLiteral;
-  private JsProgramFragment[] fragments;
-  private final Map<String, JsFunction> indexedFunctions = new HashMap<String, JsFunction>();
-  private final JsNullLiteral nullLiteral;
-  private final Map<Double, JsNumberLiteral> numberLiteralMap =
-      new HashMap<Double, JsNumberLiteral>();
-  private final JsScope objectScope;
-  private final JsRootScope rootScope;
-  private final Map<String, JsStringLiteral> stringLiteralMap =
-      new HashMap<String, JsStringLiteral>();
-  private final JsScope topScope;
-  private final JsBooleanLiteral trueLiteral;
-
-  /**
-   * Constructs a JavaScript program object.
-   */
-  public JsProgram(String unitId) {
-    rootScope = new JsRootScope(this);
-    topScope = new JsScope(rootScope, "Global", unitId);
-    objectScope = new JsScope(rootScope, "Object");
-    setFragmentCount(1);
-
-    debuggerStmt = new JsDebugger();
-    emptyStmt = new JsEmpty();
-    falseLiteral = new JsBooleanLiteral(false);
-    nullLiteral = new JsNullLiteral();
-    trueLiteral = new JsBooleanLiteral(true);
-  }
-
-  public JsBooleanLiteral getBooleanLiteral(boolean truth) {
-    if (truth) {
-      return getTrueLiteral();
-    }
-    return getFalseLiteral();
-  }
-
-  /**
-   * Gets the {@link JsStatement} to use whenever parsed source include a
-   * <code>debugger</code> statement.
-   */
-  public JsStatement getDebuggerStmt() {
-    return debuggerStmt;
-  }
-
-  public JsEmpty getEmptyStmt() {
-    return emptyStmt;
-  }
-
-  public JsBooleanLiteral getFalseLiteral() {
-    return falseLiteral;
-  }
-
-  public JsBlock getFragmentBlock(int fragment) {
-    if (fragment < 0 || fragment >= fragments.length) {
-      throw new IllegalArgumentException("Invalid fragment: " + fragment);
-    }
-    return fragments[fragment].getGlobalBlock();
-  }
-
-  public int getFragmentCount() {
-    return this.fragments.length;
-  }
-
-  /**
-   * Gets the one and only global block.
-   */
-  public JsBlock getGlobalBlock() {
-    return getFragmentBlock(0);
-  }
-
-  public JsFunction getIndexedFunction(String name) {
-    return indexedFunctions.get(name);
-  }
-
-  public JsNullLiteral getNullLiteral() {
-    return nullLiteral;
-  }
-
-  public JsNumberLiteral getNumberLiteral(double value) {
-    JsNumberLiteral lit = numberLiteralMap.get(value);
-    if (lit == null) {
-      lit = new JsNumberLiteral(value);
-      numberLiteralMap.put(value, lit);
-    }
-
-    return lit;
-  }
-
-  public JsScope getObjectScope() {
-    return objectScope;
-  }
-
-  /**
-   * Gets the quasi-mythical root scope. This is not the same as the top scope;
-   * all unresolvable identifiers wind up here, because they are considered
-   * external to the program.
-   */
-  public JsRootScope getRootScope() {
-    return rootScope;
-  }
-
-  /**
-   * Gets the top level scope. This is the scope of all the statements in the
-   * main program.
-   */
-  public JsScope getScope() {
-    return topScope;
-  }
-
-  /**
-   * Creates or retrieves a JsStringLiteral from an interned object pool.
-   */
-  public JsStringLiteral getStringLiteral(String value) {
-    JsStringLiteral lit = stringLiteralMap.get(value);
-    if (lit == null) {
-      lit = new JsStringLiteral(value);
-      stringLiteralMap.put(value, lit);
-    }
-    return lit;
-  }
-
-  public JsBooleanLiteral getTrueLiteral() {
-    return trueLiteral;
-  }
-
-  public JsNameRef getUndefinedLiteral() {
-    return new JsNameRef("$Dart$Null");
-  }
-
-  public void setFragmentCount(int fragments) {
-    this.fragments = new JsProgramFragment[fragments];
-    for (int i = 0; i < fragments; i++) {
-      this.fragments[i] = new JsProgramFragment();
-    }
-  }
-
-  public void setIndexedFunctions(Map<String, JsFunction> indexedFunctions) {
-    this.indexedFunctions.clear();
-    this.indexedFunctions.putAll(indexedFunctions);
-  }
-
-  @Override
-  public void traverse(JsVisitor v, JsContext ctx) {
-    if (v.visit(this, ctx)) {
-      for (JsProgramFragment fragment : fragments) {
-        v.accept(fragment);
-      }
-    }
-    v.endVisit(this, ctx);
-  }
-
-  @Override
-  public NodeKind getKind() {
-    return NodeKind.PROGRAM;
-  }
-}